唯一不变的是变化，持续的变化，不可避免的变化，这是当今社会的主导因素。任何明智的决策都必须考虑到世界现在的样子，以及世界未来的样子。

Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable.

Darkness cannot drive out darkness: only light can do that. Hate cannot drive out hate: only love can do that.

NP完全性的概念为理解问题的复杂性提供了一个强大的工具。

只有神才能在不犯错误的情况下区分成功和失败。