The past is a bucket of ashes.
過去是一桶灰燼。
奮斗永不停歇。
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.
生活中最重要的事情不是利用你的收益，而是避免你的損失。
We are all prisoners of our desires, and the key to our cell is in our own hands.
A book is a garden, an orchard, a storehouse, a party, a company by the way, a counselor, a multitude of counselors.
The interplay between pure and applied mathematics is where true innovation happens.
如果你正在改變世界，你就是在做重要的事情。你會興奮地起床。