A speculator is a man who observes the future, and acts before it occurs.

The first lesson reading teaches is how to be alone.

如果你想让人做某事，就让它变得简单。

有时候你只需要振作起来，继续前进。

数学的美在于它如此简单却又如此强大。

The most dangerous poison is the feeling of achievement. The antidote is to think every morning, 'What can be done better?'

The past does not have to define the future.

自然将人类置于两位至高无上的主人——痛苦和快乐的统治之下。