译文：拥有的时候，常常要想到没有的日子，不要等到没有的日子，才想起拥有的日子。赏析：不管做任何事，人都要有居安思危，防患于未然的意识。

我不是在追赶潮流，我只是想做让人感觉舒服的音乐。

Sometimes the most profound mathematics comes from playing with simple ideas until they reveal their hidden complexity.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

我年纪越大，越发现先做重要的事情这一古老规则的智慧——这个过程通常可以把最复杂的人类问题简化为可以处理的规模。

Sometimes, the deepest pain comes from emotions we cannot express.

The study of Galois representations is a testament to the power of algebraic methods.