You are more likely to learn something by finding surprises in your own behavior than by hearing surprising facts about people in general.

The average investor's return is significantly lower than market indices due primarily to market timing.

There are some conditions where you have to trust your intuition.

We have associations to things. We have, you know, we have associations to tables and to - and to dogs and to cats and to Harvard professors, and that's the way the mind works. It's an association machine.

Individual investors predictably flock to stocks in companies that are in the news.

The illusion of skill is not only an individual aberration; it is deeply ingrained in the culture of the [investment management] industry.

Mental effort, I would argue, is relatively rare. Most of the time we coast.