In this paper I wish first of all to argue against two possible views about colour qualities, which I shall label the Objectivist and Subjectivist views respectively. I find these views to be prevalent among philosophers of my acquaintance, though sometimes they are hidden by a veneer of post-Wittgensteinian sophistication. Part of my argument will depend on modern scientific theories of colour vision. In the second part of the paper I shall argue for a different view of my own.

The paper tries to rebut an objection to materialism. Anti-Materialists have argued that mental processes do not appear to be mere physical processes in the brain, And that secondary qualities such as sounds do not appear to be mere vibrations in the air. So materialists must admit that introspection and perception involve at least the illusion of the falsity of materialism. Using the headless woman illusion as a model, It is shown how the illusion is generated, And that it is (...) exactly what we ought to expect even if materialism is true. (shrink)

Why is it that philosophers find it so hard to come to agreement? Many disputes that have gone on for centuries or even millennia are still unresolved, even though there has been increased conceptual sophistication on the part of the contending parties. Consider, for example, the question of free will, where libertarians still contest the field with determinists and compatibilists.