The French philosopher and man of letters Jean Paul Sartre (1905-1980) ranks as the most versatile writer and as the dominant influence in three decades of French intellectual life.

Jean Paul Sartre was born in Paris on June 21, 1905. His father, a naval officer, died while on a tour of duty in Indochina before Sartre was two years old. His mother belonged to the Alsatian Schweitzer family and was a first cousin to Albert Schweitzer. The young widow returned to her parents' house, where she and her son were treated as "the children." In the first volume of his autobiography, The Words (1964), Sartre describes his unnatural childhood as a spoiled and precocious boy. Lacking any companions his own age, the child found "friends" exclusively in books. Reading and writing thus became his twin passions. "It was in books that I encountered the universe."

Sartre entered the École Normale...