The origins of this book go back to I956 when it was suggested to me that a study on the philosophy of Gianfrancesco Pico della Mirandola would furnish an important addition to our knowledge of the philoso phy of the Italian Renaissance. It was not, however, until I960 that I could devote a significant portion of my time to a realization of this goal. My work was essentially completed in 1963, at which time it was presented in its original form as a doctoral dissertation in the Phi losophy Department of Columbia University. Since then I have made many minor improvements and several chapters have been extensively reworked. This study represents the first attempt in fifty years to give a detailed account of even a portion of Gianfrancesco Pico’s life and thought. The most comprehensive previous study, Gertrude Bramlette Richards, Gianfrancesco Pico della lv1irandola (Cornell University Dissertation, I 9 I 5), which I have found very useful in preparing my own book, is largely based on secondary literature and is mistaken in a number of details. Furthermore, Miss Richards’ treatment of Gian francesco Pico as a thinker is very sketchy and is not an exhaustive study of his own writings. It is hoped that my present study, built in part on her extensive bibliographical indications, brings forth a certain amount of new information which will be of value for further research.