important book on suicide, Les Causes du suicide, 1930 ("The Causes of Suicide"). In this book he followed the footsteps of his mentor Émile Durkheim, expanding and elaborating upon the former's theories on suicide. Specifically, he focused on ideas such as, the ways in which rural and urban styles of life explain variations in suicide rates. Halbwachs also continued to further Durkheim's conceptualization of how specific family styles and religious backgrounds alter rates of suicide. Halbwachs included in his Les Cadres Sociaux de la Memoire (1952) the significance of the collective memory operating on the systems of family, religion and social communities. Halbwachs takes an interesting perspective regarding the relationship between memory and history. He believed that memory and history oppose each other when it comes to reliability. Memory can be transformed based on perspective, which makes it a questionable form of scholarly appreciation for the past. Whereas historians analyze history from a completely unbiased perspective, analyzing it in a critical way from a distance. Halbwachs contributed to the world of social psychology as well with his thesis on La Classe ouvrière et les niveaux de vie which translates to, "The Working Class and the Standards of Living". This work allowed Halbwachs to analyze and observe how working-class families managed their budgets. He discovered that families and individuals not only plan out their budget for what they need in the moment but what they also need in the future, which forces them to put into perspective what is necessary in the moment. His research is a modification of Durkheim's theory of collective representation. Published works Halbwachs, Maurice, On collective memory, Chicago, The University of Chicago Press, 1992 translated from: Les cadres sociaux de la mémoire, Paris, Presses Universitaires de France, 1952, originally published in Les Travaux de L'Année Sociologique, Paris, F. Alcan, 1925 edited, translated and introduction by Lewis A. Coser, includes a translation of the conclusion of: La Topographie légendaire des évangiles en terre sainte: étude de mémoire collective, Paris, Presses Universitaires de France, 1942 Halbwachs, Maurice, The collective memory, New York, Harper & Row Colophon Books, 1980, 182 pages pdfs of chapters 1 and 2 available (pp. 22–49 and 50-87) on UCSB Collective Memory seminar website translated from: La mémoire collective, Paris, Presses Universitaires de France, 1950 Complete synthesis on all of his observations of memory Published after his death introduction by Mary Douglas, includes a translation of: