当想法消失时，一幅画就完成了。

The growing good of the world is partly dependent on unhistoric acts; and that things are not so ill with you and me as they might have been, is half owing to the number who lived faithfully a hidden life, and rest in unvisited tombs. ― George Eliot, Middlemarch

True growth comes from understanding the land and working with it, not against it.

文字的力量是巨大的；它们可以治愈，可以毁灭，最重要的是，它们可以改变。

向人求助之时应该去求真正胸襟开阔的人；帮助别人时要帮助真正需要帮助的人。

数学语言是通用的；它超越了所有文化障碍。