选自汉·桓宽《盐铁论·殊路》。至，最。璞，含有玉的石头或未经雕琢过的玉。最美的东西就是最本色自然的东西，是没有什么东西可以文饰它的。此言自然本色便是美，是道家崇尚自然的思想观点。

Sustainability isn't a trend; it's the future of energy.

The arithmetic of L-functions is a journey into the hidden patterns of the mathematical universe.

I think goals should never be easy, they should force you to work, even if they are uncomfortable at the time.