The powerful have always preyed on the powerless. That's how they became powerful in the first place.

The development of efficient algorithms is as much an art as it is a science.

我从不回头看，我向前看。

——《我的回忆》（1911年11月中旬）

你和我各有一个苹果，如果我们交换苹果的话，我们还是只有一个苹果。但当你和我各有一个想法，我们交换想法的话，我们就都有两个想法了。