The history of Algerian Jews has thus far been viewed from the perspective of communities on the northern coast, who became, to some extent, beneficiaries of colonialism. ?But to the south, in the Sahara, Jews faced a harsher colonial treatment. In Saharan Jews and the Fate of French Algeria, Sarah Abrevaya Stein asks why the Jews of Algeria's south were marginalized by French authorities, how they negotiated the sometimes brutal results, and what the reverberations have been in the postcolonial era.?Drawing on materials from thirty archives across six countries, Stein tells the story of colonial imposition on a desert community that had lived and traveled in the Sahara for centuries. She paints an intriguing historical picture-of an ancient community, trans-Saharan commerce, desert labor camps during World War II, anthropologist spies, battles over oil, and the struggle for Algerian sovereignty. Writing colonialism and decolonization into Jewish history and Jews into the French Saharan one, Saharan Jews and the Fate of French Algeria is a fascinating exploration not of Jewish exceptionalism but of colonial power and its religious and cultural differentiations, which have indelibly shaped the modern world.?

NGOs set out to save lives, relieve suffering, and service basic human needs. They are committed to serving people across national borders and without regard to race, ethnicity, gender, or religion, and they offer crucial help during earthquakes, tsunamis, wars, and pandemics. But with so many ailing areas in need of assistance, how do these organizations decide where to go-and who gets the aid?In?The Good Project, Monika Krause dives into the intricacies of the decision-making process at NGOs and uncovers a basic truth: It may be the case that relief agencies try to help people but, in practical terms, the main focus of their work is to produce projects. Agencies sell projects to key institutional donors, and in the process the project and its beneficiaries become commodities. In an effort to guarantee a successful project, organizations are incentivized to help those who are easy to help, while those who are hardest to help often receive no assistance at all. The poorest of the world are made to compete against each other to become projects-and in exchange they offer legitimacy to aid agencies and donor governments. Sure to be controversial,?The Good Project?offers a provocative new perspective on how NGOs succeed and fail on a local and global level.

In We Were Adivasis, anthropologist Megan Moodie examines the Indian state's relationship to "e;Scheduled Tribes,"e; or adivasis-historically oppressed groups that are now entitled to affirmative action quotas in educational and political institutions. Through a deep ethnography of the Dhanka in Jaipur, Moodie brings readers inside the creative imaginative work of these long-marginalized tribal communities. She shows how they must simultaneously affirm and refute their tribal status on a range of levels, from domestic interactions to historical representation, by relegating their status to the past: we were adivasis.Moodie takes readers to a diversity of settings, including households, tribal council meetings, and wedding festivals, to reveal the aspirations that are expressed in each. Crucially, she demonstrates how such aspiration and identity-building are strongly gendered, requiring different dispositions required of men and women in the pursuit of collective social uplift. The Dhanka strategy for occupying the role of adivasi in urban India comes at a cost: young women must relinquish dreams of education and employment in favor of community-sanctioned marriage and domestic life. Ultimately, We Were Adivasis explores how such groups negotiate their pasts to articulate different visions of a yet uncertain future in the increasingly liberalized world.

In this book, philosopher Harry Brighouse and Spencer Foundation president Michael McPherson bring together leading philosophers to think about some of the most fundamental questions that higher education faces. Looking beyond the din of arguments over how universities should be financed, how they should be run, and what their contributions to the economy are, the contributors to this volume set their sights on higher issues: ones of moral and political value. The result is an accessible clarification of the crucial concepts and goals we so often skip over-even as they underlie our educational policies and practices.?The contributors tackle the biggest questions in higher education: What are the proper aims of the universityWhat role do the liberal arts play in fulfilling those aimsWhat is the justification for the humanitiesHow should we conceive of critical reflection, and how should we teach it to our studentsHow should professors approach their intellectual relationship with students, both in social interaction and through curriculumWhat obligations do elite institutions have to correct for their historical role in racial and social inequalityAnd, perhaps most important of all: How can the university serve as a model of justiceThe result is a refreshingly thoughtful approach to higher education and what it can, and should, be doing.?

Social critics have long lamented America's descent into a "e;culture of narcissism,"e; as Christopher Lasch so lastingly put it fifty years ago. From "e;first world problems"e; to political correctness, from the Oprahfication of emotional discourse to the development of Big Pharma products for every real and imagined pathology, therapeutic culture gets the blame. Ask not where the stereotype of feckless, overmedicated, half-paralyzed millennials comes from, for it comes from their parents' therapist's couches.?Rethinking Therapeutic Culture makes a powerful case that we've got it all wrong. Editors Timothy Aubry and Trysh Travis bring us a dazzling array of contributors and perspectives to challenge the prevailing view of therapeutic culture as a destructive force that encourages narcissism, insecurity, and social isolation. The collection encourages us to examine what legitimate needs therapeutic practices have served and what unexpected political and social functions they may have performed. Offering both an extended history and a series of critical interventions organized around keywords like pain, privacy, and narcissism, this volume offers a more nuanced, empirically grounded picture of therapeutic culture than the one popularized by critics. Rethinking Therapeutic Culture is a timely book that will change the way we've been taught to see the landscape of therapy and self-help.

Among the great figures of Progressive Era reform, Edith and Grace Abbott are perhaps the least sung. Peers, companions, and coworkers of legendary figures such as Jane Addams and Sophonisba Breckinridge, the Abbott sisters were nearly omnipresent in turn-of-the-century struggles to improve the lives of the poor and the working-class people who fed the industrial engines and crowded into diverse city neighborhoods. Grace's innovative role as a leading champion for the rights of children, immigrants, and women earned her a key place in the history of the social justice movement. As her friend and colleague Eleanor Roosevelt wrote, Grace was "e;one of the great women of our day . . . a definite strength which we could count on for use in battle."e;A Sister's Memories is the inspiring story of Grace Abbott (1878-1939), as told by her sister and social justice comrade, Edith Abbott (1876-1957). Edith recalls in vivid detail the Nebraska childhood, impressive achievements, and struggles of her sister who, as head of the Immigrants' Protective League and the U.S. Children's Bureau, championed children's rights from the slums of Chicago to the villages of Appalachia. Grace's crusade can perhaps be best summed up in her well-known credo: "e;Justice for all children is the high ideal in a democracy."e; Her efforts saved the lives of thousands of children and immigrants and improved those of millions more. These trailblazing social service works led the way to the creation of the Social Security Act and UNICEF and caused the press to nickname her "e;The Mother of America's 43 Million Children."e; She was the first woman in American history to be nominated to the presidential cabinet and the first person to represent the United States at a committee of the League of Nations.Edited by Abbott scholar John Sorensen, A Sister's Memories is destined to become a classic. It shapes the diverse writings of Edith Abbott into a cohesive narrative for the first time and fills in the gaps of our understanding of Progressive Era reforms. Readers of all backgrounds will find themselves engrossed by this history of the unstoppable, pioneer feminist Abbott sisters.

In this era of tweets and blogs, it is easy to assume that the self-obsessive recording of daily minutiae is a recent phenomenon. But Americans have been navel-gazing since nearly the beginning of the republic. The daily planner-variously called the daily diary, commercial diary, and portable account book-first emerged in colonial times as a means of telling time, tracking finances, locating the nearest inn, and even planning for the coming winter. They were carried by everyone from George Washington to the soldiers who fought the Civil War. And by the twentieth century, this document had become ubiquitous in the American home as a way of recording a great deal more than simple accounts.In this appealing history of the daily act of self-reckoning, Molly McCarthy explores just how vital these unassuming and easily overlooked stationery staples are to those who use them. From their origins in almanacs and blank books through the nineteenth century and on to the enduring legacy of written introspection, McCarthy has penned an exquisite biography of an almost ubiquitous document that has borne witness to American lives in all of their complexity and mundanity.

"e;I realize that I am a soldier of production whose duties are as important in this war as those of the man behind the gun."e; So began the pledge that many home front men took at the outset of World War II when they went to work in the factories, fields, and mines while their compatriots fought in the battlefields of Europe and on the bloody beaches of the Pacific. The male experience of working and living in wartime America is rarely examined, but the story of men like these provides a crucial counter-narrative to the national story of Rosie the Riveter and GI Joe that dominates scholarly and popular discussions of World War II.In Meet Joe Copper, Matthew L. Basso describes the formation of a powerful, white, working-class masculine ideology in the decades prior to the war, and shows how it thrived-on the job, in the community, and through union politics. Basso recalls for us the practices and beliefs of the first- and second-generation immigrant copper workers of Montana while advancing the historical conversation on gender, class, and the formation of a white ethnic racial identity. Meet Joe Copper provides a context for our ideas of postwar masculinity and whiteness and finally returns the men of the home front to our reckoning of the Greatest Generation and the New Deal era.

The Jazz Age. The phrase conjures images of Louis Armstrong holding court at the Sunset Cafe in Chicago, Duke Ellington dazzling crowds at the Cotton Club in Harlem, and star singers like Bessie Smith and Ma Rainey. But the Jazz Age was every bit as much of a Paris phenomenon as it was a Chicago and New York scene.In?Paris Blues, Andy Fry provides an alternative history of African American music and musicians in France, one that looks beyond familiar personalities and well-rehearsed stories. He pinpoints key issues of race and nation in France's complicated jazz history from the 1920s through the 1950s. While he deals with many of the traditional icons-such as Josephine Baker, Django Reinhardt, and Sidney Bechet, among others-what he asks is how they came to be so iconic, and what their stories hide as well as what they preserve. Fry focuses throughout on early jazz and swing but includes its re-creation-reinvention-in the 1950s. Along the way, he pays tribute to forgotten traditions such as black musical theater, white show bands, and French wartime swing.?Paris Blues?provides a nuanced account of the French reception of African Americans and their music and contributes greatly to a growing literature on jazz, race, and nation in France.

The question of how the American state defines its power has become central to a range of historical topics, from the founding of the Republic and the role of the educational system to the functions of agencies and America's place in the world. Yet conventional histories of the state have not reckoned adequately with the roots of an ever-expanding governmental power, assuming instead that the American state was historically and exceptionally weak relative to its European peers.Here, James T. Sparrow, William J. Novak, and Stephen W. Sawyer assemble definitional essays that search for explanations to account for the extraordinary growth of US power without resorting to exceptionalist narratives. Turning away from abstract, metaphysical questions about what the state is, or schematic models of how it must work, these essays focus instead on the more pragmatic, historical question of what it does. By historicizing the construction of the boundaries dividing America and the world, civil society and the state, they are able to explain the dynamism and flexibility of a government whose powers appear so natural as to be given, invisible, inevitable, and exceptional.

For more than three decades, Rogers M. Smith has been one of the leading scholars of the role of ideas in American politics, policies, and history. Over time, he has developed the concept of "e;political peoples,"e; a category that is much broader and more fluid than legal citizenship, enabling Smith to offer rich new analyses of political communities, governing institutions, public policies, and moral debates.This book gathers Smith's most important writings on peoplehood to build a coherent theoretical and historical account of what peoplehood has meant in American political life, informed by frequent comparisons to other political societies. From the revolutionary-era adoption of individual rights rhetoric to today's battles over the place of immigrants in a rapidly diversifying American society, Smith shows how modern America's growing embrace of overlapping identities is in tension with the providentialism and exceptionalism that continue to make up so much of what many believe it means to be an American.A major work that brings a lifetime of thought to bear on questions that are as urgent now as they have ever been, Political Peoplehood will be essential reading for social scientists, political philosophers, policy analysts, and historians alike.

City and regional planners talk constantly about the things of the world-from highway interchanges and retention ponds to zoning documents and conference rooms-yet most seem to have a poor understanding of the materiality of the world in which they're immersed. Too often planners treat built forms, weather patterns, plants, animals, or regulatory technologies as passively awaiting commands rather than actively involved in the workings of cities and regions.In the ambitious and provocative Planning Matter, Robert A. Beauregard sets out to offer a new materialist perspective on planning practice that reveals the many ways in which the nonhuman things of the world mediate what planners say and do. Drawing on actor-network theory and science and technology studies, Beauregard lays out a framework that acknowledges the inevitable insufficiency of our representations of reality while also engaging more holistically with the world in all of its diversity-including human and nonhuman actors alike.

"e;Why are Kazakhstan and Montana the same place?"e; asks one chapter of Kate Brown's surprising and unusual journey into the histories of places on the margins, overlooked or erased. It turns out that a ruined mining town in Kazakhstan and Butte, Montana-America's largest environmental Superfund site-have much more in common than one would think thanks to similarities in climate, hucksterism, and the perseverance of their few hardy inhabitants. Taking readers to these and other unlikely locales, Dispatches from Dystopia delves into the very human and sometimes very fraught ways we come to understand a particular place, its people, and its history.In Dispatches from Dystopia, Brown wanders the Chernobyl Zone of Alienation, first on the Internet and then in person, to figure out which version-the real or the virtual-is the actual forgery. She also takes us to the basement of a hotel in Seattle to examine the personal possessions left in storage by Japanese-Americans on their way to internment camps in 1942. In Uman, Ukraine, we hide with Brown in a tree in order to witness the annual male-only Rosh Hashanah celebration of Hasidic Jews. In the Russian southern Urals, she speaks with the citizens of the small city of Kyshtym, where invisible radioactive pollutants have mysteriously blighted lives. Finally, Brown returns home to Elgin, Illinois, in the midwestern industrial rust belt to investigate the rise of "e;rustalgia"e; and?the ways?her formative experiences have inspired her obsession with modernist wastelands.?Dispatches from Dystopia powerfully and movingly narrates the histories of locales that have been silenced, broken, or contaminated. In telling these previously unknown stories, Brown examines the making and unmaking of place, and the lives of the people who remain in the fragile landscapes that are left behind.

Welcome to "e;East Hudson,"e; an elite private school in New York where the students are attentive, the colleagues are supportive, and the tuition would make the average person choke on its string of zeroes. You might think a teacher here would have little in common with most other teachers in America, but as this veteran educator-writing anonymously-shows in this refreshingly honest account, all teachers are bound by a common thread. Stripped of most economic obstacles and freed up by anonymity, he is able to tell a deeper story about the universal conditions, anxieties, foibles, generosities, hopes, and complaints that comprise every teacher's life. The results are sometimes funny, sometimes scandalous, but always recognizable to anyone who has ever walked into a classroom, closed the door, and started their day.?This is not a how-to manual. Rather, the author explores the dimensions of teaching that no one else has, those private thoughts few would dare put into a book but that form an important part of the day-to-day experience of a teacher. We see him ponder the clothes that people wear, think frankly about money (and the imbalance of its distribution), get wrangled by parents, provide on-the-fly psychotherapy, drape niceties over conversations that are actually all-out warfare, drop an f-bomb or two, and deal with students who are just plain unlikeable. We also see him envy, admire, fear, and hope; we see him in adulation and uncertainty, and in energy and exhaustion. We see him as teachers really are: human beings with a complex, rewarding, and very important job.There has been no shortage of commentary on the teaching profession over the decades, but none quite like this. Unflinching, wry, and at times laugh-out-loud funny, it's written for every teacher out there who has ever scrambled, smirked, or sighed-and toughed it out nonetheless.?

Each week during the growing season, farmers' markets offer up such delicious treasures as brandywine tomatoes, cosmic purple carrots, pink pearl apples, and chioggia beets-varieties of fruits and vegetables that are prized by home chefs and carefully stewarded by farmers from year to year. These are the heirlooms and the antiques of the food world, endowed with their own rich histories. While cooking techniques and flavor fads have changed from generation to generation, a Ribston Pippin apple today can taste just as flavorful as it did in the eighteenth century. But how does an apple become an antique and a tomato an heirloomIn Edible Memory, Jennifer A. Jordan examines the ways that people around the world have sought to identify and preserve old-fashioned varieties of produce. In doing so, Jordan shows that these fruits and vegetables offer a powerful emotional and physical connection to a shared genetic, cultural, and culinary past.?Jordan begins with the heirloom tomato, inquiring into its botanical origins in South America and its culinary beginnings in Aztec cooking to show how the homely and homegrown tomato has since grown to be an object of wealth and taste, as well as a popular symbol of the farm-to-table and heritage foods movements. ?She shows how a shift in the 1940s away from open pollination resulted in a narrow range of hybrid tomato crops. But memory and the pursuit of flavor led to intense seed-saving efforts increasing in the 1970s, as local produce and seeds began to be recognized as living windows to the past. In the chapters that follow, Jordan combines lush de*ion and thorough research as she investigates the long history of antique apples; changing tastes in turnips and related foods like kale and parsnips; the movement of vegetables and fruits around the globe in the wake of Columbus; and the poignant, perishable world of stone fruits and tropical fruit, in order to reveal the connections-the edible memories-these heirlooms offer for farmers, gardeners, chefs, diners, and home cooks. This deep culinary connection to the past influences not only the foods we grow and consume, but the ways we shape and imagine our farms, gardens, and local landscapes.?From the farmers' market to the seed bank to the neighborhood bistro, these foods offer essential keys not only to our past but also to the future of agriculture, the environment, and taste. By cultivating these edible memories, Jordan reveals, we can stay connected to a delicious heritage of historic flavors, and to the pleasures and possibilities for generations of feasts to come.

We all know that higher education has changed dramatically over the past two decades. Historically a time of exploration and self-discovery, the college years have been narrowed toward an increasingly singular goal-career training-and college students these days forgo the big questions about who they are and how they can change the world and instead focus single-mindedly on their economic survival. In The Purposeful Graduate, Tim Clydesdale elucidates just what a tremendous loss this is, for our youth, our universities, and our future as a society. At the same time, he shows that it doesn't have to be this way: higher education can retain its higher cultural role, and students with a true sense of purpose-of personal, cultural, and intellectual value that cannot be measured by a wage-can be streaming out of every one of its institutions.The key, he argues, is simple: direct, systematic, and creative programs that engage undergraduates on the question of purpose. Backing up his argument with rich data from a Lilly Endowment grant that funded such programs on eighty-eight different campuses, he shows that thoughtful engagement of the notion of vocational calling by students, faculty, and staff can bring rich rewards for all those involved: greater intellectual development, more robust community involvement, and a more proactive approach to lifelong goals. Nearly every institution he examines-from internationally acclaimed research universities to small liberal arts colleges-is a success story, each designing and implementing its own program, that provides students with deep resources that help them to launch flourishing lives.Flying in the face of the pessimistic forecast of higher education's emaciated future, Clydesdale offers a profoundly rich alternative, one that can be achieved if we simply muster the courage to talk with students about who they are and what they are meant to do.

The Great American Recession resulted in the loss of eight million jobs between 2007 and 2009. More than four million homes were lost to foreclosures. Is it a coincidence that the United States witnessed a dramatic rise in household debt in the years before the recession-that the total amount of debt for American households doubled between 2000 and 2007 to $14 trillionDefinitely not. Armed with clear and powerful evidence, Atif Mian and Amir Sufi reveal in House of Debt how the Great Recession and Great Depression, as well as the current economic malaise in Europe, were caused by a large run-up in household debt followed by a significantly large drop in household spending.Though the banking crisis captured the public's attention, Mian and Sufi argue strongly with actual data that current policy is too heavily biased toward protecting banks and creditors. Increasing the flow of credit, they show, is disastrously counterproductive when the fundamental problem is too much debt. As their research shows, excessive household debt leads to foreclosures, causing individuals to spend less and save more. Less spending means less demand for goods, followed by declines in production and huge job losses. How do we end such a cycleWith a direct attack on debt, say Mian and Sufi. ?More aggressive debt forgiveness after the crash helps, but as they illustrate, we can be rid of painful bubble-and-bust episodes only if the financial system moves away from its reliance on inflexible debt contracts. As an example, they propose new mortgage contracts that are built on the principle of risk-sharing, a concept that would have prevented the housing bubble from emerging in the first place.Thoroughly grounded in compelling economic evidence, House of Debt offers convincing answers to some of the most important questions facing the modern economy today: Why do severe recessions happenCould we have prevented the Great Recession and its consequencesAnd what actions are needed to prevent such crises going forward?

The ideas and terminology of Darwinism are so pervasive these days that it seems impossible to avoid them, let alone imagine a world without them. But in this remarkable rethinking of scientific history, Peter J. Bowler does just that. He asks:?What if Charles Darwin had not returned from the voyage of the Beagle and thus did not write On the Origin of SpeciesWould someone else, such as Alfred Russel Wallace, have published the selection theory and initiated a similar transformationOr would the absence of Darwin's book have led to a different sequence of events, in which biology developed along a track that did not precipitate a great debate about the impact of evolutionismWould there have been anything equivalent to social Darwinism, and if so would the alternatives have been less pernicious and misappropriated?In Darwin Deleted, Bowler argues that no one else, not even Wallace, was in a position to duplicate Darwin's complete theory of evolution by natural selection.?Evolutionary biology would almost certainly have emerged, but through alternative theories, which were frequently promoted by scientists, religious thinkers, and moralists who feared the implications of natural selection. Because non-Darwinian elements of evolutionism flourished for a time in the real world, it is possible to plausibly imagine how they might have developed, particularly if the theory of natural selection had not emerged until decades after the acceptance of the basic idea of evolution. Bowler's unique approach enables him to clearly explain the non-Darwinian tradition-and in doing so, he reveals how the reception of Darwinism was historically contingent. By taking Darwin out of the equation, Bowler is able to fully elucidate the ideas of other scientists, such as Richard Owen and Thomas Huxley, whose work has often been misunderstood because of their distinctive responses to Darwin.Darwin Deleted boldly offers a new vision of scientific history. It is one where the sequence of discovery and development would have been very different and would have led to an alternative understanding of the relationship between evolution, heredity, and the environment-and, most significantly, a less contentious relationship between science and religion. Far from mere speculation, this fascinating and compelling book forces us to reexamine the preconceptions that underlie many of the current controversies about the impact of evolutionism. It shows how contingent circumstances surrounding the publication of On the Origin of Species polarized attitudes in ways that still shape the conversation today.?

The notion that maternal care and love will determine a child's emotional well-being and future personality has become ubiquitous. In countless stories and movies we find that the problems of the protagonists-anything from the fear of romantic commitment to serial killing-stem from their troubled relationships with their mothers during childhood. How did we come to hold these views about the determinant power of mother love over an individual's emotional developmentAnd what does this vision of mother love entail for children and mothersIn The Nature and Nurture of Love, Marga Vicedo examines scientific views about children's emotional needs and mother love from World War II until the 1970s, paying particular attention to John Bowlby's ethological theory of attachment behavior. Vicedo tracks the development of Bowlby's work as well as the interdisciplinary research that he used to support his theory, including Konrad Lorenz's studies of imprinting in geese, Harry Harlow's experiments with monkeys, and Mary Ainsworth's observations of children and mothers in Uganda and the United States. Vicedo's historical analysis reveals that important psychoanalysts and animal researchers opposed the project of turning emotions into biological instincts. Despite those substantial criticisms, she argues that attachment theory was paramount in turning mother love into a biological need. This shift introduced a new justification for the pre*ive role of biology in human affairs and had profound-and negative-consequences for mothers and for the valuation of mother love.

In Trying Biology, Adam R. Shapiro convincingly dispels many conventional assumptions about the 1925 Scopes "e;monkey"e; trial. Most view it as an event driven primarily by a conflict between science and religion. Countering this, Shapiro shows the importance of timing: the Scopes trial occurred at a crucial moment in the history of biology textbook publishing, education reform in Tennessee, and progressive school reform across the country. He places the trial in this broad context-alongside American Protestant antievolution sentiment-and in doing so sheds new light on the trial and the historical relationship of science and religion in America.?For the first time we see how religious objections to evolution became a prevailing concern to the American textbook industry even before the Scopes trial began. Shapiro explores both the development of biology textbooks leading up to the trial and the ways in which the textbook industry created new books and presented them as "e;responses"e; to the trial. Today, the controversy continues over textbook warning labels, making Shapiro's study-particularly as it plays out in one of America's most famous trials-an original contribution to a timely discussion.

Between present and past, visible and invisible, and sensation and idea, there is resonance-so philosopher Maurice Merleau-Ponty argued and so Jessica Wiskus explores in The Rhythm of Thought. Holding the poetry of Stephane Mallarme, the paintings of Paul Cezanne, the prose of Marcel Proust, and the music of Claude Debussy under Merleau-Ponty's phenomenological light, she offers innovative interpretations of some of these artists' masterworks, in turn articulating a new perspective on Merleau-Ponty's philosophy.?More than merely recovering Merleau-Ponty's thought, Wiskus thinks according to it. First examining these artists in relation to noncoincidence-as silence in poetry, depth in painting, memory in literature, and rhythm in music-she moves through an array of their artworks toward some of Merleau-Ponty's most exciting themes: our bodily relationship to the world and the dynamic process of expression. She closes with an examination of synesthesia as an intertwining of internal and external realms and a call, finally, for philosophical inquiry as a mode of artistic expression. Structured like a piece of music itself, The Rhythm of Thought offers new contexts in which to approach art, philosophy, and the resonance between them.