How did different Greek scientists differ in their views on human nature?

The ancient philosopher Protagoras declared man to be the measure of all things. In ancient Greece, the philosophy of anthropocentrism was active. Socrates was interested in the inner world of man – his virtue and soul. He studied the moral side of people. Democritus represented man as an object consisting of atoms – both soul and body. He believed that human happiness lies in moderation and rationality. A child may want a lot, but a husband may not. In Plato, the body was opposed to the soul, and it was she who made the human being human. Aristotle argued that man is a social animal, which is endowed with reason.