The deepest need of man is the need to overcome his separateness, to leave the prison of his aloneness.

可持续性不是一种选择，而是我们对下一代的责任。

My name is Usain Bolt and I am the fastest man in the world.

You can't have the good without the bad. So I just take the bad with the good and move on.

Courage is resistance to fear, mastery of fear - not absence of fear.

数学的统一性不是幻觉，而是等待被揭示的现实。