If there was less sympathy in the world there would be less trouble in the world.

Technology will drive the next era of energy, but human ingenuity will always be at its core.

要摧毁一种文化，你不必烧书。只要让人们停止阅读它们。

The key to progress is persistence and curiosity.

能正确指出我缺点的人，是我的好老师；能赞成又能鞭策我的人，是我的好朋友；谄媚又阿谀奉承我的人，是害我的贼寇。

Mental processes are the tools by which we build our survival.