Humanism—Humanism grew into a distinct ideological movement during the Renaissance as a reaction against feudalism and medieval theology. It proclaims freedom of the rational individual, opposes religious asceticism, and promotes man's rights to pleasure and the satisfaction of earthly desires and requirements. It is dedicated to fostering the ethical and creative development of the individual without reference to God or other concepts of the supernatural. In the nineteenth century, humanism took the shape of a secular religion; a prominent humanist of that time was Karl Marx. Today, the term is commonly used to mean a set of entirely non-religious beliefs and values. See Marxism, Relativism.