Fred Greenstein has been a paragon of scholarship and practical advice in his many years of work on the presidency. Here, some of the leading scholars of the presidency and leadership studies come together to pay tribute to Greenstein and his work. Original essays reflect the broad sweep of Greenstein’s scholarship from the systematic study of personality and politics to the analysis of chief executives from Franklin Roosevelt on, with special attention to their political styles, advisory systems, and decisionmaking processes. In his studies of American presidents, Greenstein was a pioneer in the use of archival documents to test hypotheses and illuminate issues that bear on the performance of the modern presidency. The distinguished list of contributors to this volume include John Burke, Robert A. Dahl, Alexander and Juliette George, Betty Glad, Alonzo Hamby, Erwin Hargrove, John Kessel, Anthony King, Kenneth Kitts, J. Donald Moon, and Fred Greenstein’s first and last graduate students at Princeton- Larry Berman and Meena Bose. Greenstein himself generously writes a new essay on Plumbing the Presidential Psyche, adding to his substantial contributions to political psychology.