Trend-following is not such a good model. It’s simply eroded. Things change and being able to adjust is what made Mr. Simons so successful. “Statistic predictor signals erode over the next several years； it can be five years or 10 years. You have to keep coming up with new things because the market is against us. If you don’t keep getting better， you’re going to do worse.

Doubt is the artist’s most honest companion.

爱就是试图理解对方。

可持续性不是一个流行词，而是对后代的承诺。

The details are not the details. They make the design.

The key to progress is persistence and a willingness to challenge conventional wisdom.