The problem with people who have no vices is that generally you can be pretty sure they’re going to have some pretty annoying virtues.
分别时南飞的鸿雁刚刚北去，今日北归的大雁又已南飞
The best art leaves you with more questions than answers.
The only way to be truly satisfied is to do what you believe is great work.
函数是一种对应规则，通过它当给定任何东西（作为参数）时，可以获得另一个东西（该参数的函数值）。
La verdadera ciencia enseña, sobre todo, a dudar y a ser ignorante.