The study of mathematics is a constant dialogue between the concrete and the abstract.

The best way to measure your investing success is not by whether you're beating the market but by whether you've put in place a financial plan and a behavioral discipline that are likely to get you where you want to go.

不要走在我后面，因为我可能不会引路；不要走在我前面，因为我可能不会跟随；请走在我的身边，做我的朋友。

对未知的恐惧是一切智慧的开始。

适应是理解行为的关键。

事理明白则心愈能清楚而专一，心能专一则事理愈能通达流畅。