The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

当没有人相信你时，你必须相信自己。

The next green revolution won't come from a lab alone—it will come from farmers' fields around the world.

光与物质的相互作用是理解量子现象的关键。