These essays by his friends, students, colleagues, and admirers honor Marx Wartofsky on his 65th birthday by their humane and rigorous investigations of themes from his own broad range of interests. Art and science, ethics and history, from the great Enlightenment through the 19th century to our time of failed hopes and ironic successes, and especially human self-understanding through praxis, Wartofsky's joys, sorrows, curiosity and intelligence find their reflections in these insightful and original contributions. The authors include Joseph Agassi, Andrew Buchwalter, Peter Caws, Robert S. Cohen, William Earle, Bernard Elevitch, Paul Feyerabend, Roger S. Gottlieb, Carol C. Gould, Hilde Hein, Jaakko Hintikka, Gregg Horowitz, Michael Kelly, Peter Kivy, Erazim Kohak, Douglas Lackey, Berel Lang, Isaac Levi, Joseph Margolis, Gyorgy Markus, Alasdair MacIntyre, William McBride, Thomas McCarthy, Joëlle Proust, Roshdi Rashed, Cheyney Ryan, Abner Shimony, Kristin Shrader-Frechette, Lorenzo Simpson, Gary Smith, John Stachel, and Willis Truitt.