The beauty of mathematics is that it allows us to abstract away the complexities of the real world and focus on the underlying principles.

Sometimes, the hardest thing and the right thing are the same.

人类心智是一套信息处理机器，由自然选择设计来解决我们狩猎采集祖先面临的适应性问题。

The key to success is persistence, persistence, and more persistence.

我们都在寻找某样东西，但我们不知道它是什么。