However, some people are surprised to find that the world's religions and philosophies tend to break down into a few major categories. These five worldviews include all the dominant outlooks in the world today. There is no such thing as a soul or a spirit. Everything can be explained on the basis of natural law. Man is the chance product of a biological process of evolution.
Man is entirely material.
The human species will one day pass out of existence. Truth is usually understood as scientific proof. Only that which can be observed with the five senses is accepted as real or true. No objective values or morals exist. Morals are individual preferences or socially useful behaviors.