About Jean-Paul Sartre:
Jean-Paul Charles Aymard Sartre was a French philosopher, playwright, novelist, political activist, biographer, and literary critic. He was one of the key figures in the philosophy of existentialism and phenomenology, and one of the leading figures in 20th-century French philosophy and Marxism.
I'd come to realize that all our troubles spring from our failure to use plain, clear-cut language.
Jean-Paul Sartre