We live in the best of all possible worlds because it was chosen from all possible worlds.

对民主的爱就是对平等的爱。

I'm not going to limit myself just because people won't accept the fact that I can do something else.

Twenty years from now, you will be more disappointed by the things you didn’t do than the ones you did.So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover. （注：这句说话被部分人质疑不是由马克·吐温所说的。）