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。）

我们实现明天的唯一限制将是我们今天的疑虑。

唯一能阻止你的人是你自己。

解释：兵器既不齐全又不锋利，实质上和没有兵器一样！

The city's poor are like the roots of a tree: unseen, but essential to its survival.