Joshua Beroukhim

Throughout Ben Franklin’s adult life, he consistently invested roughly an hour a day in deliberate learning. I call this Franklin’s five-hour rule: one hour a day on every weekday.

As we build up a reservoir of “first principles” and associate those principles with different fields, we suddenly gain the superpower of being able to go into a new field we’ve never learned before, and quickly make unique contributions.

Developing the habit of mastering the multiple models which underlie reality is the best thing you can do. — Charlie Munger