站在路中间是很危险的，因为你会被从两个方向来的车辆撞倒。
Loneliness is not the absence of others, but the absence of oneself.
质数就是当你把所有模式都剔除后剩下的东西。我觉得质数就像生活，它们非常有逻辑性，但你永远无法找出规律，即使你花上一辈子时间去思考。
The charm of study consists chiefly in the satisfaction which the mind experiences in acquiring knowledge.
We are all ready to be savage in some cause. The difference between a good man and a bad one is the choice of the cause.
When we are no longer able to change a situation, we are challenged to change ourselves.