Nietzsche claimed that the "Twilight of the Idols" was a general introduction to his philosophy. Against the current of his times, he attacked Greek civilization as the ultimate source of decadence. Socrates and Plato are vilified, and the concept of a 'real' world beyond that which we see is scorned as a moral 'optical illusion'. "The Anti-Christ" offers a similarly pungent critique of Christianity, pointing out that the Gospels reveal two contradictory views of Jesus, one a 'bringer of joy' the other a preacher of Last Judgment, Sin, and Guilt.