做一个良善的先人。做一些让未来世代感激你的事情。其中一件简单的事情就是去种一棵树。

行为不仅仅是对刺激的反应，而是由期望和目的引导的。

Leadership is not about being in charge. It's about taking care of those in your charge.

The past is not just the past, but a prism through which the subject filters his own changing self-image.

The boundary between physics and mathematics is not as clear-cut as one might think.

"We are all part of the same story, but we tell it in different ways."