There are these two young fish swimming along, and they happen to meet an older fish swimming the other way, who nods at them and says, "Morning, boys, how's the water?" And the two young fish swim on for a bit, and then eventually one of them looks over at the other and goes, "What the hell is water?"

If at this moment, you're worried that I plan to present myself here as the wise old fish explaining what water is to you younger fish, please don't be. I am not the wise old fish. The immediate point of the fish story is that the most obvious, ubiquitous, important realities are often the ones that are the hardest to see and talk about. Stated as an English sentence, of course, this is just a banal platitude -- but the fact is that, in the day-to-day trenches of adult existence, banal platitudes can have life-or-death importance. That may sound like hyperbole, or abstract nonsense.

A huge percentage of the stuff that I tend to be automatically certain of is, it turns out, totally wrong and deluded. Here's one example of the utter wrongness of something I tend to be automatically sure of: Everything in my own immediate experience supports my deep belief that I am the absolute center of the universe, the realest, most vivid and important person in existence. We rarely talk about this sort of natural, basic self-centeredness, because it's so socially repulsive, but it's pretty much the same for all of us, deep down. It is our default-setting, hard-wired into our boards at birth. Think about it: There is no experience you've had that you were not at the absolute center of. The world as you experience it is right there in front of you, or behind you, to the left or right of you, on your TV, or your monitor, or whatever. Other people's thoughts and feelings have to be communicated to you somehow, but your own are so immediate, urgent, real -- you get the idea. But please don't worry that I'm getting ready to preach to you about compassion or other-directedness or the so-called "virtues." This is not a matter of virtue -- it's a matter of my choosing to do the work of somehow altering or getting free of my natural, hard-wired default-setting, which is to be deeply and literally self-centered, and to see and interpret everything through this lens of self.

People who can adjust their natural default-setting this way are often described as being "well adjusted," which I suggest to you is not an accidental term.

Given the triumphal academic setting here, an obvious question is how much of this work of adjusting our default-setting involves actual knowledge or intellect. This question gets tricky. Probably the most dangerous thing about college education, at least in my own case, is that it enables my tendency to over-intellectualize stuff, to get lost in abstract arguments inside my head instead of simply paying attention to what's going on right in front of me. Paying attention to what's going on inside me. As I'm sure you guys know by now, it is extremely difficult to stay alert and attentive instead of getting hypnotized by the constant monologue inside your own head. Twenty years after my own graduation, I have come gradually to understand that the liberal-arts cliché about "teaching you how to think" is actually shorthand for a much deeper, more serious idea: "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. Think of the old cliché about "the mind being an excellent servant but a terrible master." This, like many clichés, so lame and unexciting on the surface, actually expresses a great and terrible truth. It is not the least bit coincidental that adults who commit suicide with firearms almost always shoot themselves in the head. And the truth is that most of these suicides are actually dead long before they pull the trigger. And I submit that this is what the real, no-bull- value of your liberal-arts education is supposed to be about: How to keep from going through your comfortable, prosperous, respectable adult life dead, unconscious, a slave to your head and to your natural default-setting of being uniquely, completely, imperially alone, day in and day out.