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。）

罗马帝国为什么垮台？什么是拉丁语办公室自动化？

I was neat, clean, shaved and sober, and I didn't care who knew it.

Patience is key in observational astronomy—some discoveries take decades to confirm.