The past is a foreign country; they do things differently there.

The human condition is one of constant struggle, but it is also one of endless possibility.

And what I noted, since the really big ideas carry 95 percent of the freight, it wasn’t at all that hard for me to pick up all the big ideas and all the big disciplines and make them a standard part of my mental routines. Once you have the ideas, of course, they are no good if you don’t practice. You don’t practice, you lose it.

The beauty of mathematics lies in its ability to connect seemingly unrelated ideas.

能源的未来在于发展与可持续性之间的平衡。

The most difficult thing is to be simple.

家不是你出生的地方；家是你所有逃离企图终止的地方。