【解释】在狭窄的路上行走，留一点余地让别人走；遇到美味可口的食物，留出三分让给别人吃，这是立身处世最快乐的方法。

可持续性不是一个流行词，而是长期成功的商业必要条件。

What we gain by experience is more real and more solid than what we gain by reasoning.

The art of education must be to bring the child to the point where he can educate himself.

The psychologist must avoid all forms of mental physics.