You can prematurely optimize maintainability, flexibility, security, and robustness just like you can performance.
John CarmackI recognize that I possess a very special intellect, but at the same time, I recognize that I'm lacking in a lot of areas. But being well-rounded is greatly overrated.
John CarmackSharing the code just seems like The Right Thing to Do. It costs us rather little, but it benefits a lot of people in sometimes very significant ways. There are many university research projects, proof of concept publisher demos, and new platform test beds that have leveraged the code. Free software that people value adds wealth to the world.
John CarmackAt its best, entertainment is going to be a subjective thing that can't win for everyone, while at worst, a particular game just becomes a random symbol for petty tribal behavior.
John CarmackIn the information age, the barriers [to entry into programming] just aren't there. The barriers are self imposed. If you want to set off and go develop some grand new thing, you don't need millions of dollars of capitalization. You need enough pizza and Diet Coke to stick in your refrigerator, a cheap PC to work on, and the dedication to go through with it. We slept on floors. We waded across rivers.
John Carmack