If you accept my estimates and you accept the capital asset pricing model, that would have to be true.

如果你同意我的估算,而且认同资本资本资产定价模型，那这种投资组合就会带来最大收益。

耶鲁公开课 - 金融市场课程节选

As a matter of fact,if things were perfectly efficiently priced, there wouldn't be any opportunity to generate excess returns and if you make active bets--if you make bets against the market -then whether you win or lose has to do with luck.

事实上,如果资产都是有效定价的,那么根本不可能获得任何超额收益,如果你主动一搏,要从市场中获利,那么无论得失都只能靠运气了

耶鲁公开课 - 金融市场课程节选