生命中最伟大的光辉不在于永不坠落，而在于坠落后总能再度升起。
"The greatest glory in living lies not in never falling, but in rising every time we fall."
学习数学的唯一方法就是做数学。
To remain quiet is to resolve the mind in the self.
人类和动物的行为受相同法则支配。
The mind is a place of its own which in itself can make a heaven of hell, a hell of heaven.