你必须相信自己的直觉，然后放手一搏。

Machinery and labor-saving devices are only valuable as they serve to reduce the cost of manufacture.

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

The Eskimos had fifty-two names for snow because it was important to them: there ought to be as many for love.

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。）