In 1929 at the École Normale, he met Simone de Beauvoir, who studied at the Sorbonne. She went on to become a noted philosopher, writer, and feminist. The two became inseparable and lifelong companions. In 1938, Sartre wrote the novel called "La Nausée" (Nausea). This story explains the way of thinking of existentialism. Existentialism is a way of thinking about human freedom.