出自晋·葛洪《抱朴子·应嘲》。虽说昆山的玉石很多，但不能救济原宪的贫穷。喻指毫无价值的空话。

The greatest killer of happiness is comparison. If you must compare， compare yourself to you yesterday

I always believe if you’re stuck in a hole and maybe things aren’t going well you will come out stronger.

Find more pleasure in intelligent dissent than in passive agreement, for, if you value intelligence as you should, the former implies a deeper agreement than the latter.

"Every story is a journey, and every journey changes the traveler."

The only way to learn mathematics is to do mathematics.

I write to find out what I think.