Business is about making money, not friends.

The greatest disability is a bad attitude.

The best ideas often come from the most unexpected places.

Investors should be wary of high fees and complex products.

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.