Though the water running in the fountain be every one's, yet who can doubt, but that in the pitcher is his only who drew it out?

科学是一段旅程，而不是终点。

There are two freedoms - the false, where a man is free to do what he likes; the true, where he is free to do what he ought.

智力不是储存信息的能力，而是知道如何使用它。

Success is not the key to happiness. Happiness is the key to success.