The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done.

要么忙着活，要么忙着死，人只有两种选择。

美国能源独立并不意味着孤立 - 我们仍然是全球市场的一部分。

在自然界中，没有什么是孤立存在的。

The world is full of obvious things which nobody by any chance ever observes.

If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.