在数据库的世界里，一种尺寸并不适合所有人。专业化是效率的关键。

Let me explain. I think it would be very unusual for anyone here, or anyone watching, to be envious of the Queen of England. Even though she is much richer than any of you are, and she's got a very large house, the reason why we don't envy her is because she's too weird.

Investors should avoid market timing and stock picking.

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

实证研究者最重要的技能不是数学，而是判断力。