追求真理需要相当大的努力，这就是为什么只有很少人愿意出于对知识的热爱而去追求真理，尽管上帝在人的心灵中植入了对这种知识的自然渴望。
The study of truth requires a considerable effort - which is why few are willing to undertake it out of love of knowledge - despite the fact that God has implanted a natural appetite for such knowledge in the minds of men.
天下只有具体的事物（器）存在。所谓规律（道）是事物的规律，不能将事物说成是规律的事物。
The essence of science is to ask the right questions.