The past is never dead. It's not even past.

A healthy forest means a healthy economy; the two are inseparable.

Architecture must be a bridge between the past and the future.

The most prominent single element in modern scientific management is the task idea. The work of every workman is fully planned out by the management at least one day in advance, and each man receives in most cases complete written instructions, describing in detail the task which he is to accomplish.

The truth is rarely pure and never simple.

Mathematics is the music of reason.

一个人要知道自己的位置，就像一个人知道自己的脸面一样，这是最为清醒的自觉。

危机是一件不能浪费的事情。