Synopsis The Philosophical Library presents the most important thinkers through the ages and their most influential writings.Jean-Paul Sartre, a significant voice in the creation of existential thought, explored the ways human existence in unique among all life forms in its capacity to choose. In this important collection of his writings, focusing on the meanings of perception, knowledge, and especially being, the reader will discover how Sartre's doctrine, which outlines with beautiful clarity the meaning of existence as he defined it, relates to the practical demands of living.