At the end of the day, if I can say I had fun, it was a good day.

The past is a foreign country; they do things differently there.

Given the choice between the experience of pain and nothing, I would choose pain.

我们不能改变过去，但我们可以改变对过去的看法。

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.

I used to walk down the street like I was a star... I want people to walk around delusional about how great they can be - and then to fight so hard for it every day that the lie becomes the truth.