关键词: 天人合德, 价值本原, 应然, 本然, 必然

Abstract: To combine the heaven and the man into one is one of fundamental characteristics of Chinese philosophy, it is reflected as combination of virtues of the heaven and the man. This proposition decides the noumenon of traditional morals, the origin of moral value and human moral nature, and it is the key idea andfundamental characteristic. No doubt it has many defects in theory, but it is extremely rich in abstract consideration and provides its own resolvement to manyimportant theoretical problems in ethics. It has still inspirations to our thinking of these questions today.

Key words: combination of virtues of the heaven and the man, value origin, ought to, origin, necessity