What's interesting about human thinking is that the more familiar concepts in the common sense, the harder it is to explain. Many of the questions asked by young children cause headaches in adults because they are the common sense of adults, and children who are just learning to know the world know why. For example, what is a person, what is an animal, the difference between a person and an animal, and so on. Philosophy is one such word that we usually call deep, philosophical, but we also use to say that a person has some stereotypes. Recently reading ancient Greek philosophy, we think more about the word philosophy. What do we read about philosophical history? Such as a few basic philosophies that people need to know in life, such successful research into the mind of chicken broth, why is it attracting people? In ancient China there was philosophy, but the word philosophy was exotic. Ancient Chinese literary philosophy is not divided, called Zi, sutra, metaphysics, science, psychol