The program of A.A., as written by Bill Wilson and Dr. Smith, only has one purpose: to get you sober. That's it. To make you a better person, forget it. That was one of the things he came to understand in those years of trial and error. It has to be about only one thing.

That's one of my favorite things about Twitter: You can tweak your feed into a fabulous novelty engine. That's only one thing you can do with it, but it's one of the things I find most entertaining about it.

Reading code is like reading all things written: You have to scribble, make a mess, remind yourself that the work comes to you through trial and error and revision.

Failure is essential. Trial and error is necessary.

The shortest way to do many things is to do only one thing at once.

Trial and error are usually the prime means of solving life’s problems. Yet many people are afraid to undertake the trial because they’re too afraid of experiencing the mistake. They make the mistake of believing that all error is wrong and harmful, when most of it is both helpful and necessary.