“Installing" is not a user goal!”

“For the record, the vuvuzela is not my enemy — and I even have, for reasons of self-defence installed a mini-vuvu with surprisingly powerful performance levels around my neck — though I miss hearing the crescendo of noise from the crowd that should accompany a promising attack on goal or a goal itself. Instead, of course, there is the monotone drone — a constant that belies the ebbs and flows of a game.”

“To build a software that your users understand, capture the language of that users in a class diagram.”

“Smoking is suicide by instalments.”

“Art is original. Marcel Duchamp was an artist when he pioneered Dadaism and installed a urinal in a museum.The second person to install a urinal wasn't an artist, he was a plumber.”

“Users are a double-edged sword. They can help you improve your language, but they can also deter you from improving. So choose your users carefully, and be slow to grow their number. Having users is like optimization: the wise course is to delay it.”