From a graduation speech he gave at Kenyon College in 2005:

Twenty years after my own graduation, I have come gradually to understand that…”Learning how to think” really means learning how to exercise some control over how and what you think. It means being conscious and aware enough to choose what you pay attention to and to choose how you construct meaning from experience. Because if you cannot exercise this kind of choice in adult life, you will be totally hosed…

By way of example, let’s say it’s an average day, and you get up in the morning, go to your challenging job, and you work hard for nine or ten hours, and at the end of the day you’re tired, and you’re stressed out, and all you want is to go home and have a good supper and maybe unwind for a couple of hours and then hit the rack early because you have to get up the next day and do it all again. But then you remember there’s no food at home — you haven’t had time to shop this week, because of your challenging job — and so now after work you have to get in your car and drive to the supermarket. It’s the end of the workday, and the traffic’s very bad, so getting to the store takes way longer than it should, and when you finally get there the supermarket is very crowded, because of course it’s the time of day when all the other people with jobs also try to squeeze in some grocery shopping, and the store’s hideously, fluorescently lit, and infused with soul-killing Muzak or corporate pop, and it’s pretty much the last place you want to be, but you can’t just get in and quickly out: You have to wander all over the huge, overlit store’s crowded aisles to find the stuff you want, and you have to maneuver your junky cart through all these other tired, hurried people with carts, and of course there are also the glacially slow old people and the spacey people and the ADHD kids who all block the aisle and you have to grit your teeth and try to be polite as you ask them to let you by, and eventually, finally, you get all your supper supplies, except now it turns out there aren’t enough checkout lanes open even though it’s the end-of-the-day-rush, so the checkout line is incredibly long, which is stupid and infuriating, but you can’t take your fury out on the frantic lady working the register.

Anyway, you finally get to the checkout line’s front, and pay for your food, and wait to get your check or card authenticated by a machine, and then get told to “Have a nice day” in a voice that is the absolute voice of death, and then you have to take your creepy flimsy plastic bags of groceries in your cart through the crowded, bumpy, littery parking lot, and try to load the bags in your car in such a way that everything doesn’t fall out of the bags and roll around in the trunk on the way home, and then you have to drive all the way home through slow, heavy, SUV-intensive rush-hour traffic, etcetera, etcetera.

The point is that petty, frustrating crap like this is exactly where the work of choosing comes in. Because the traffic jams and crowded aisles and long checkout lines give me time to think, and if I don’t make a conscious decision about how to think and what to pay attention to, I’m going to be pissed and miserable every time I have to food-shop…

The really important kind of freedom involves attention, and awareness, and discipline, and effort, and being able truly to care about other people and to sacrifice for them, over and over, in myriad petty little unsexy ways, every day.