“[M]y worry is that … you won’t put enough really excellent stuff into your brain. I’m talking about what you might call the “theory of maximum taste.” This theory is based on the idea that exposure to genius has the power to expand your consciousness. If you spend a lot of time with genius, your mind will end up bigger and broader than if you spend your time only with run-of-the-mill stuff. The theory of maximum taste says that each person’s mind is defined by its upper limit—the best that it habitually consumes and is capable of consuming. … In college, you get assigned hard things. You’re taught to look at paintings and think about science in challenging ways. After college, most of us resolve to keep doing this kind of thing, but we’re busy and our brains are tired at the end of the day. Months and years go by. We get caught up in stuff, settle for consuming Twitter and, frankly, journalism. Our maximum taste shrinks. Have you ever noticed that 70 percent of the people you know are more boring at 30 than they were at 20?.”David Brooks, Contributing writer at The Atlantic and columnist for The New York Times.