Every word is a world.

我们都欠死亡一条生命。

钢铁塑造了过去，但创新将决定它的未来。

Can a man still be brave if he’s afraid. That is the only time a man can be brave.

If you want to be successful, you have to be willing to fail.

You are always a valuable, worthwhile human being — not because anybody says so, not because you're successful, not because you make a lot of money — but because you decide to believe it and for no other reason.

文化进化的研究必须考虑社会的内部动态和外部环境约束。