Feng Youlan has always believed that philosophy can improve people's thinking ability and spiritual realm. In A Brief History of Chinese Philosophy, he clearly pointed out that "the purpose of learning philosophy is to make people become people, not some kind of people", and the lofty task of philosophy is to make people reach the highest achievement and become saints. The highest value of philosophy is not to increase people's correct knowledge, but to teach people to become saints, "to improve people's spiritual realm-to reach the realm beyond the secular world and obtain the value higher than moral value (super-moral value)", so as to finally reach the realm of harmony between man and nature. Feng Youlan believes that the function of philosophy is to make people become "heaven and earth" people through "awareness". If a person can become a saint, he has reached the ultimate value as a human being. Feng Youlan's so-called "saint" is the person who created the realm of heaven and earth. He is a "saint" who has both the golden mean of Confucian saints and the extremely bright personality of Taoist saints.