Mario L. Small, Ph.D., is Quetelet Professor of Social Science at Columbia University. A University of Bremen Excellence Chair, and an elected member of the National Academy of Sciences, the American Academy of Arts and Sciences, the American Academy of Political and Social Sciences, and the Sociological Research Association, Small has published award-winning articles and books on urban inequality, personal networks, and the relationship between qualitative and quantitative methods. His books include Villa Victoria: The Transformation of Social Capital in a Boston Barrio, Unanticipated Gains: Origins of Network Inequality in Everyday Life -- both of which received the C. Wright Mills Award for Best Book -- and Someone To Talk To: How Networks Matter in Practice, which received the James Coleman Best Book Award among other honors. His most recent books are the co-edited, Personal Networks: Classic Readings and New Directions in Egocentric Analysis, whose 50 contributors provide a compendium of person-centered social network research, and the co-authored Qualitative Literacy: A Guide to Evaluating Ethnographic and Interview Research, which provides strategies for assessing qualitative research from an empirical perspective. Small is currently studying the relationship between networks and decision-making, the ability of large-scale data to answer critical questions about urban inequality, and the relation between qualitative and quantitative methods. Please visit https://www.mariosmall.com/ for more information.