Nowadays, Xun Zi's interpretation about the relationship between Heaven and Man is usually employed, from the perspective of seeing Heaven in its natural sense, to understand Xun's ideas of ”not seeking to know Heaven” and ”knowing Heaven.” In fact, ”Heaven” has its natural meaning, on the one hand, and is morally related to Man, on the other hand. Sages are people of prudence. The so-called ”not seeking to know Heaven” and ”knowing Heaven” are the wise choices of prudence regarding ”Heaven.”