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.
规模养殖的核心是标准化，标准化的前提是科学化。
Flaubert believed that it was impossible to explain one art form in terms of another, and that great paintings required no words of explanation.