One of the big lessons of a big project is you don't want people that aren't really programmers programming, you'll suffer for it!

Because of the nature of Moore's law, anything that an extremely clever graphics programmer can do at one point can be replicated by a merely competent programmer some number of years later.

It is not that uncommon for the cost of an abstraction to outweigh the benefit it delivers. Kill one today!

Focus is a matter of deciding what things you're not going to do.

I really think, if anything, there is more evidence to show that the violent games reduce aggression and violence. There have actually been some studies about that, that it's cathartic. If you go to QuakeCon and you walk by and you see the people there [and compare that to] a random cross section of a college campus, you're probably going to find a more peaceful crowd of people at the gaming convention. I think it’s at worst neutral and potentially positive.

Rocket science has been mythologized all out of proportion to its true difficulty.

Sometimes, the elegant implementation is just a function. Not a method. Not a class. Not a framework. Just a function.