es the study of the origin. People want to find one thing, and with it they can make everything else. At first, water, fire, earth and other materials were considered the origin. And then, elementary particles such as atoms and quarks were discovered. It is true that the universe was originally made up of only elementary particles, but these materials are not able to evolve into the world now. The difference between substances is structure. Structure determines function, which includes various forces and complex interactions. So the world evolves from simple to complex with both basic particles and structure.

Basic particle and structure are matter. But the search for the origin is not for the material source of the world, but the logical starting point. This logical starting point is the beginning of the conscious world, not the material world. Pythagoras noticed that abstract things such as numbers could reflect commonality of things, and later Plato invented the Idea, which then dominated philosophy. Although people wanted to find the origin of the objective world, and they don't know the origin is the logical starting point, but people need commonality and theory to support practice every day, so people felt that the abstract concept is more philosophical than atoms. An idea is a dead thing, Hegel makes it a alive. So the theory of starting point and process of deduction is more abundant. Although Hegel's interpretation of the world woven in the logic is completely wrong, his theory still has great value.

In the second stage of the development of philosophy, Descartes created subjective idealism, so it was recognized that Descartes was the founder of modern philosophy. The criticism of objective idealism by subjective idealism is correct, but objective idealism didn't die. Many philosophers such as Leibniz, Nietzsche, Hegel and Heidegger are objective idealists. It was even pushed into climax by Hegel. The criticism