So if we have to do something like this with consciousness, bring something else fundamental into our theory, then what we want is a theory of how it is that that fundamental component and the underlying physical processes are related. We don't want it to be a mess of correlations, we want it to be this simple, fundamental theory, a basic set of fundamental laws. Physicists sometimes say they want a set of laws that are so simple that they're part of the fundamental furniture of the universe, they're so simple you can write them on the front of a T-shirt, and, in a sense, that's the goal of a fundamental theory of consciousness too. We want a bunch of what I call psychophysical principles because they're principles that connect physical processing with the psychological or the mental. These psychophysical principles should ultimately be as fundamental, as simple as the kind of principles we find in fundamental physics. Because I think it may well be that those principles themselves are part of the fundamental furniture of the world.

Then the question is "What are those principles?" That's of course the question for which nobody yet has an answer - that's the research program, in a sense, on the hard problem as I conceive it - to try and find the simple underlying principles connecting physical processing to consciousness, such that when you apply those laws in familiar cases like ours, to my brain for example, you predict that you're going to get the kind of conscious experience that I have, and if I apply it to a system like you it will give the kind of conscious experience that you have, and so on.