We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.

The most common form of despair is not being who you are.

学者必须自信，既然自信，无论如何也无法被剥夺。

"In the end, we will remember not the words of our enemies, but the silence of our friends."

Mathematics is the art of asking the right questions and then finding their answers.

音乐系我嘅信仰，我会一直坚持落去。