人需要困扰，困扰是心理健康的必需之物。

Another thing I think should be avoided is extremely intense ideology because it cabbages up one's mind...when you're young it's easy to drift into royalties and when you announce that you're a loyal member...and you're gradually ruining your mind.

Abstraction is not just about hiding details; it's about creating a clear and concise model of the problem domain.

Mathematics is the poetry of logical ideas.

那话怎么说的来着，"好酒不贪杯，益寿延年"。