"Imagination is more important than knowledge."
数学的真正力量不在于它的复杂性，而在于它的简洁和优雅。
进步的概念必须建立在灾难的观念之上。
It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.
路上丢失的东西没有人去捡拾，老百姓不敢乱取非分之财。并非形容民风淳朴，而是形容法律严明。