Angels are not gods, they are spiritual servants of a single Creator. Some historians argue that belief in angels represents a compromise with polytheism. There is a common agreement that angels were created, but there is no consensus on when they were created. What are angels made from? How do angels differ from humans? What does philosophy say about angels? Plato, Origen, and Aristotle wrote about angels. The classical account of angels, as developed from Philo through Augustine and Dionysius to Ibn Sinas, Maimonides, and Thomas Aquinas, describes angels as being very different from humans.