It is beyond dispute that postbiblical Christianity took over many elements from
ancient metaphysics and ethics, the oriental - Hellenistic
mystery religions, and the hermetic and neo-Platonic mysticism, and even from popular pagan piety and legal wisdom.
Earlier, he had been painting scenes of urban life with a sense of isolation and
mystery; after World War II, he turned to timeless themes of death and survival, and to concepts drawn from
ancient myths and
religions.