The real tragedy of the poor is that they can afford nothing but self-denial.

The ordinary becomes extraordinary when you look at it long enough.

Man is defined as a human being and a woman as a female — whenever she behaves as a human being she is said to imitate the male.

数学的美在于它让我们无需离开椅子就能探索宇宙。

It is better by noble boldness to run the risk of being subject to half of the evils we anticipate than to remain in cowardly listlessness for fear of what might happen.

写作是面对世界混乱的一种方式。

领导力就是激励人们去做他们从未想过自己能做的事。