Abstract
This introductory chapter of Philosophy as a Way of Life: Ancients and Moderns — Essays in Honor of Pierre Hadot talks about the life of Pierre Hadot. The author's memories of his close friendship with Pierre Hadot are presented. In the 1970s, Hadot began to accord more and more importance to the idea of spiritual exercises, that is, philosophical practices intended to transform the practitioner's way of looking at the world and consequently his or her way of being. These exercises, involving not just the intellect or reason, but all of a human being's faculties, including emotion and imagination, had the same goal as all ancient philosophy: reducing human suffering and increasing happiness, by teaching people to detach themselves from their particular, egocentric, individualistic viewpoints and become aware of their belonging, as integral component parts, to the Whole constituted by the entire cosmos.