There is no doubt that if you are a student, you will make progress if you are doubtful, small doubts will make small progress, and big doubts will make great progress.

This sentence comes from Lu Jiuyuan's Collection of Lu Jiuyuan's Quotations, a famous philosopher in the Song Dynasty. It means that you are afraid that you will not find problems when you study, and you can make progress only when you study with problems. That is to say, it is often said that "learning is expensive and doubtful", "it is better to read a dead book than not to study", "applying what you have learned" and "learning to solve doubts".

Lu Jiuyuan's philosophical thought:

The origin of Lu Jiuyuan's psychology, which he claimed to be "self-satisfied by reading Mencius", is not completely the same as Mencius, and the inheritance relationship with Zen is also very obvious. Lu Jiuyuan said in The Book with Wang Shunbai that although he "doesn't read Tibetan scriptures, he can taste them, such as Lengyan, Yuanjue and Vimala." ?

In fact, he is consistent with Zen in many aspects. In ontology, they all take the heart as the ontology, and in the theory of mind and nature, the heart is dominant. In terms of self-cultivation, both of them are irrational. In the realm view, the Buddha is essentially the same. Lu Jiuyuan put forward the philosophical proposition that "mind is reason" and formed a new school-"mind study".

Heaven, humanity and physics are only in my heart, and the heart is the only reality: "The universe is my heart, and my heart is the universe", "The things in the universe are internal affairs, and the things in the universe are internal affairs".

what are the above references? Baidu Encyclopedia-Lu Jiuyuan