让我们尝试教导慷慨和利他主义,因为我们天生自私。
In language, there is no one-to-one correspondence between words and the things they refer to.
我不是一个完美的人,但我每天都在努力变得更好。
The only thing that can make you a better person is yourself.
The essence of mathematics is not to make simple things complicated, but to make complicated things simple.