Politics is almost as exciting as war, and quite as dangerous. In war you can only be killed once, but in politics many times.

能正确指出我缺点的人，是我的好老师；能赞成又能鞭策我的人，是我的好朋友；谄媚又阿谀奉承我的人，是害我的贼寇。

I never stop believing in myself.

Curiosity drives discovery. Without it, science would stand still.