“Philosophers have been especially concerned with the problem of consciousness—for example, how to explain the redness of red or the painfulness of pain. This is a very thorny issue. The problem springs from the fact that the redness of red that I perceive so vividly cannot be precisely communicated to another human being, at least in the ordinary course of events. If you cannot describe the properties of a thing unambiguously, you are likely to have some difficulty trying to explain these properties in reductionist terms.”

“A famous thorny issue in philosophy is the so-called infinite regress problem. For example, if we say that the properties of a diamond can be explained by the properties and arrangements of its carbon atoms, that the properties of a carbon atom can be explained by the properties and arrangements of its protons, neutrons and electrons, that the properties of a proton can be explained by the properties and arrangements of its quarks, and so on, then it seems that we’re doomed to go on forever trying to explain the properties of the constituent parts. The Mathematical Universe Hypothesis offers a radical solution to this problem: at the bottom level, reality is a mathematical structure, so its parts have no intrinsic properties at all!”

“Red is a colour I’ve felt very strongly about. Maybe red is a very Indian colour, maybe it’s one of those things that I grew up with and recognise at some other level. Of course, it is the colour of the interior of our bodies. Red is the centre.”

“There are different levels of organization in the occurrence of events. You cannot explain the events of one level in terms of the events of another. For example, you cannot explain life in terms of mechanical concepts, nor society in terms of individual psychology. Analysis can only take you down the scale of organization. It cannot reveal the workings of things on a higher level. To some extent the holistic philosophers are right.”

“I don't get this at all. It's like protesting the fact that some people are red-haired.”

“The easy problems of consciousness are those that seem directly susceptible to the standard methods of cognitive science, whereby a phenomenon is explained in terms of computational or neural mechanisms. The hard problems are those that seem to resist those methods…. The really hard problem of consciousness is the problem of experience. When we think and perceive, there is a whir of information-processing, but there is also a subjective aspect…. When we see, for example, we experience visual sensations: the felt quality of redness, the experience of dark and light, the quality of depth in a visual field. Other experiences go along with perception in different modalities: the sound of a clarinet, the smell of mothballs. Then there are bodily sensations, from pains to orgasms; mental images that are conjured up internally; the felt quality of emotion, and the experience of a stream of conscious thought.”

“He crossed the road when the signal was red, that’s his problem!”

“Think of your pain like a bunch of red roses, a beautiful thorn necklace. Everyone has one.”

“You know my tendency is always to imagine things in my head and to work from this idea. I am going to explain my theory of blue, yellow and red, which will probably seem as 'Spanish' to you as my face.
Blue is the male principle, astringent and spiritual. Yellow is the female principle, gentle, gay and spiritual. Red is matter, brutal and heavy and always the color to be opposed and overcome by the other two. For example, if you mix serious, spiritual blue with red, you intensify the blue to unbearable sorrow, and yellow the conciliatory, the complementary color to purple, becomes indispensable... If you mix red and yellow to make orange, you turn passive, feminine yellow into a Fury, with sensual force that again makes cool, spiritual blue indispensable, the man..”

“There is a red and angry world…
Red things happen there.
The world eats your wife…
Eats your friends…
Eats all the things… that make you human…
And you become a monster.
And the world… just keeps on eating.”