出自汉·桓宽《盐铁论·险固》。这句话以“地利”与“人和”、“武力”与“文德”的对比，阐明了实行仁政对于治国安邦的重要性。

"A good story should both disturb the comfortable and comfort the disturbed."

There is no shortcut in science, only down-to-earth work.

We read books to find out who we are.

I had ambition not only to go farther than any man had been before, but as far as it was possible for a man to go.

Natural gas will play a critical role in the energy mix as we move toward a lower-carbon future.

心灵是一个协调感觉的系统。