Theorems are the permanent literature of mathematics.
The best way to predict the future is to invent it.
If you’re horrible to me, I’m going to write a song about it, and it won’t be a good one for you.
Live within your income and save so you can invest.Learn what you need to learn.
唯一真正的监狱是恐惧,唯一真正的自由是从恐惧中解脱。
In every real man a child is hidden that wants to play.