What you don't do determines what you can do.
你不做的事情决定了你能做什么。
To understand the universe, you must understand the language in which it is written, and that language is mathematics.
理解的提高有两个目标:首先,我们自己的知识增长;其次,使我们能够将这些知识传递给他人。
过去是一个跟随我们的影子,但它不必定义我们。