1788-1860. German philosopher whose The World as Will and Idea 1818 expounded an atheistic and pessimistic world view: an irrational will is considered as the inner principle of the world, producing an ever-frustrated cycle of desire, of which the only escape is aesthetic contemplation or absorption into nothingness. This theory struck a responsive chord in the philosopher Nietzsche, the composer Wagner, the German novelist Thomas Mann, and the English writer Thomas Hardy.