I'm not afraid to fall, because I know I'll get back up.

I know what I can do, so it doesn't bother me what other people think or say.

热爱真理，但宽恕错误。

The right of a nation to kill a tyrant in case of necessity can never be doubted until the right of a tyrant to kill a nation has been proved.

学习算法的设计应同时受到理论见解和实践考虑的指导。