痛苦的源头是无知。
The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.
言语是唯一能永恒的东西。
最危险的毒药是成就感，解药是每晚思考明天如何做得更好。
人是他所相信的样子。
"A good picture book should work without any words at all."
采矿业有责任以可持续和道德的方式运营。