Something is usable if it behaves exactly as expected.

Beware of Methodologies. They are a great way to bring everyone up to a dismal, but passable, level of performance, but at the same time, they are aggravating to more talented people who chafe at the restrictions that are placed on them.

Every day that we spent not improving our products was a wasted day.

An idea isn't worth that much. It's the execution of the idea that has value. If you can't convince one other person that this is something to devote your life to, then it's not worth it.

It's harder to read code than to write it.

A user interface is well-designed when the program behaves exactly how the user thought it would.

If you are a programmer working in 2006 and you don’t know the basics of characters, character sets, encodings, and Unicode, and I catch you, I’m going to punish you by making you peel onions for six months in a submarine.