You can't *discover* that the brain is a digital computer. You can only *interpret* the brain as a digital computer.

We do not live in several different, or even two different, worlds, a mental world and a physical world, a scientific world and a world of common sense. Rather, there is just one world; it is the world we all live in, and we need to account for how we exist as part of it.

Where questions of style and exposition are concerned I try to follow a simple maxim: if you can't say it clearly you don't understand it yourself.

Many people mistakenly suppose that the essence of consciousness is that of a control mechanism

An utterance can have Intentionality, just as a belief has Intentionality, but whereas the Intentionality of the belief is intrinsic the Intentionality of the utterance is derived.

I will argue that in the literal sense the programmed computer understands what the car and the adding machine understand, namely, exactly nothing.

Materialism ends up denying the existence of any irreducible subjective qualitative states of sentience or awareness.