Irrationality is the square root of all evil.

The paraphrase of Gödel's Theorem says that for any record player, there are records which it cannot play because they will cause its indirect self-destruction.

Sometimes it seems as though each new step towards AI, rather than producing something which everyone agrees is real intelligence, merely reveals what real intelligence is not.

The strange flavour of AI work is that people try to put together long sets of rules in strict formalisms which tell inflexible machines how to be flexible.

There has to be a common sense cutoff for craziness, and when that threshold is exceeded, then the criteria for publication should get far, far more stringent.

You can never represent yourself totally .... to seek self -knowledge is to embark on a journey which ... will always be incomplete, cannot be charted on a map, will never halt, cannot be described.

It as if you took a lot of very good food and some dog excrement and blended it all up so that you can't possibly figure out what's good or bad. It's an intimate mixture of rubbish and good ideas, and it's very hard to disentangle the two, because these are smart people; they're not stupid.