This is William Kluback's sixth volume on Paul Valéry. As Kluback moved from one volume to another, he realized how Valéry mastered the human mind; how he saw in it man's most distinguished power. In face of the Gulags and the Holocaust, of mass murder, and universal deception, Valéry maintained his faith in rationality. In this faith of reason, he found the strength to continue his work. We study him because we believe that rationality is our guide and protector.