世界上到处都是愿意帮你制造龙卷风的人,这样你以后就可以声称自己幸存下来了。
A journey is a person in itself; no two are alike. And all plans, safeguards, policing, and coercion are fruitless. We find after years of struggle that we do not take a trip; a trip takes us.
因果关系的阶梯有三个梯级:观察、行动和想象。
The progress of mathematics is measured by the number of problems it can solve.