All pantheism must ultimately be shipwrecked on the inescapable demands of ethics, and then on the evil and suffering of the world. If the world is a theophany, then everything done by man, and even by animal, is equally divine and excellent; nothing can be more censurable and nothing more praiseworthy than anything else; hence there is no ethics.

The World as Will and Representation (ed. Courier Corporation, 1966) - ISBN: 9780486217628