出自北齐·颜之推《颜氏家训·勉学》。没有把天下所有的书读个遍，就不要信口雌黄的发表观点。

To write is to rewrite.

Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.

不带评判地观察是最高形式的智慧。

城市的建筑应该激励它的市民。