Innovation is not about doing something completely new, but about doing it better than anyone else.

在1,500只ETF基金中，有1,450只是我不会碰的，因为它们不够多元化。或者他们有一些巨大的投机扭曲，如果你能猜对市场，你会在一两天内做得很好，但谁能做到这一点呢？没有人。

In mathematics, the art of proposing a question must be held of higher value than solving it.

Coal is not just a commodity, it's a commitment to America's future.

返祖现象是指个体中重现远祖特征的现象。