The method of psychology must be as exact as that of the physical sciences.

The world is the totality of facts, not of things.

软件工程的目标是控制复杂性，而不是制造复杂性。

The ultimate goal of machine learning is to make machines that can learn from experience and improve their performance over time.

一本书本身就是一个世界，一个在我们眼前展开的宇宙。