Global collaboration is something that Wiki mastered in a small way and here we can master it in a big way. - Ward Cunningham

Sometimes when you collaborate, you have to trust people more than you have any reason to do so. It works because most people are good

So today, let's write a program simply. But let's also realize that tomorrow, we're going to make it more complex, because tomorrow it's going to do more. So we'll take that simplicity and we'll lose some of it. But tomorrow, hopefully tomorrow's program is as simple as possible for tomorrow's needs. Hopefully we'll preserve simplicity as the program grows.

Honest to God, I think Kent Beck's contribution to all this has been taking stuff that he and I discovered quietly together, or picked up from other programmers, and taking it to the limit. Taking it to the limit. And the fact that it actually holds up — and a lot of it improves — when taking it to the limit is why it should naturally be called "Extreme." Kent's single biggest contribution is being daring enough to say, "This is all that matters, and we should do it all the time."