应该忧虑的是自身不好，而不该忧虑别人不了解自己。《老子》中说“知人者智也，自知者明也。”人生要多些反思，也要多些扪心自问，看清自己更重要。

The history of mathematics is a history of human thought and progress.

画的表面就像皮肤一样，它把所有东西都结合在一起。

Art is a response to what life does to us.

The theory of probabilities is at bottom nothing but common sense reduced to calculus.

Always keep your knife sharp, your wits sharper, and your spirit sharpest.

唯一安全的系统是关闭的，浇筑在混凝土块中，并密封在有武装警卫的铅衬房间中。