译文：读书人读书，第一要有志向，第二要有见识，第三要有恒心。有了志向就不会甘心处于平庸的地位;有了见识就知道学问是没有尽头的，不敢因为有了一点收获就自我满足;有了恒心就绝对没有办不成的事情。这三种品质缺一不可。
In the quest to understand the cosmos, we must remain humble, for every answer we find leads to a multitude of new questions.
It is not from the benevolence of the butcher， the brewer， or the baker that we expect our dinner， but from their regard to their own interest.