煤炭使美国在世界范围内保持竞争力。

True architecture emerges from constraints.

We should not only pursue technological leadership but also the practicality and popularity of technology.

尊重贤能，让他们在其位谋其职，那么天下有才能的人都愿意为这个朝代效力。

Of all the things which wisdom provides to make us entirely happy, much the greatest is the possession of friendship.