筹夷事必知夷情，知夷情必知夷形。
筹划洋人的事情一定要先了解洋人的情况，要了解洋人的情况一定知道洋人的情况。
"I think the mind is the most important thing in any sport. If you can control your mind, you can control the situation."
Separate the processes of creation from improving. You can’t write and edit， or sculpt and polish， or make and analyze at the same time. If you do， the editor stops the creator. While you invent， don’t select. While you sketch， don’t inspect. While you write the first draft， don’t reflect. At the start， the creator mind must be unleashed from judgement.
农业效率绝不能以生物多样性为代价。
数学的力量在于它的普遍性和抽象性。
总有一个人要赢，那为什么不能是我？。