Father: 'Anything but journalism.' I rebelled.

Good writing does not succeed or fail on the strength of its ability to persuade. It succeeds or fails on the strength of its ability to engage you, to make you think, to give you a glimpse into someone else's head.

Character isn't what we think it is or, rather, what we want it to be. It isn't a stable, easily identifiable set of closely related traits, and it only seems that way because of a glitch in the way our brains are organized. Character is more like a bundle of habits and tendencies and interests, loosely bound together and dependent, at certain times, on circumstance and context.

In fact, researchers have settled on what they believe is the magic number for true expertise: ten thousand hours.

David Epstein, the author of the best book on athletics in recent memory - "The Sports Gene" - wrote to me to say that he thinks I'm being overly generous. He points out that, for years, there used to be an "all-star challenge" on television, in which the best professional athletes from a variety of sports competed in a kind of makeshift decathlon.

The answer is that we are not helpless in the face of our first impressions. They may bubble up from the unconscious - from behind a locked door inside of our brain - but just because something is outside of awareness doesn't mean it's outside of control.

Policy is driven by more than politics, however. It is equally driven by ideas.