In many cases it is a matter for decision and not a simple matter of fact whether x understands y; and so on.

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.

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

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.

Darwin's greatest achievement was to show that the appearance of purpose, planning, teleology (design), and intentionality in the origin and development of human and animal species was entirely an illusion. The illusion could be explained by evolutionary processes that contained no such purpose at all. But the spread of ideas through imitation required the whole apparatus of human consciousness and intentionality

Nowadays nobody bothers, and it is considered in slightly bad taste to even raise the question of God's existence. Matters of religion are like matters of sexual preference: they are not discussed in public, and even the abstract questions are discussed only by bores.

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.