Sometimes the most profound mathematics comes from playing with simple ideas until they reveal their hidden complexity.
The best way to find out if you can trust somebody is to trust them.
今天很残酷,明天更残酷,后天很美好,但绝对大部分是死在明天晚上,所以每个人不要放弃今天。
I don’t like to be comfortable. I like to be challenged.