The beauty of mathematics is that it is so simple yet so powerful.

我们都是自己故事的总和，而传记帮助我们理解这个等式。

过去从未死去，它甚至还未过去。

The only way to do great work is to love what you do.

But it is the same with man as with the tree. The more he seeks to rise into the height and light, the more vigorously do his roots struggle earthword, downword, into the dark, the deep - into evil.

The only rule is that there are no rules.