我们可以断言，没有激情，任何伟大的事业都不能完成。

We don't inherit the oceans from our ancestors; we borrow them from our children.

真相是，我们都有能力做出极大的恶和极大的善。是我们做出的选择定义了我们。

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.