Many spend their time berating practitioners for not applying their method. We all need to disseminate our ideas, but most of our time should be spent applying and improving our methods, not selling them. The best way to sell a mouse trap is to display some trapped mice.

Whenever anyone says, 'theoretically', they really mean, 'not really'.

Find the simplest model that is not a lie is the key to better software design.

My judgment is that research in 'Star Wars' is going to fail, and I believe this so strongly that I'm willing to stake my professional reputation on this. I don't believe anybody is going to build this thing.

Requirements in mathematical language are no use unless they are easier to read than the code.

I have found that the reason a lot of people are interested in artificial intelligence is the same reason a lot of people are interested in artificial limbs: they are missing one.

Complexity is not a goal. I don't want to be remembered as an engineer of complex systems.