The only real difficulties in programming are cache invalidation and naming things.

Mathematical proofs, like diamonds, are hard as well as clear.

The world eventually sends out a mean-ass Patrol Boy to slow your progress and show you who’s boss. […] He’s a mean guy, a Bad Lieutenant, the sworn enemy of goofery, fuckery, pride, ambition, loud music, and all things nineteen.

If something cannot go on forever, it will stop.

If they had told me it was going to be fifteen years, would it have been easier to endure?