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.

"The artist must be a philosopher, a scientist, and a poet all at once."

The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.

The only way to do great work is to love what you do.