I don't regret the things I've done, I regret the things I didn't do.
The greatest theorems often start as simple conjectures, born out of intuition.
The truth is rarely pure and never simple.
在共和政府中,人人平等;在专制政府中,人人也平等:在前者中,因为他们是一切;在后者中,因为他们什么都不是。