One of the founders of existentialism, the eminent philosopher Karl Jaspers, here presents for the general reader an introduction to philosophy. In doing so, he also offers a lucid summary of his own philosophical thought. In Jaspers' view, the source of philosophy is to be found "in wonder, in doubt, in a sense of forsakenness", and the philosophical quest is a process of continual change and self-discovery. In a new foreword to this edition, Richard Owsley provides a brief overview of Jaspers' life and achievement.