Hmm …

… Maverick Philosopher: Two Senses of 'Mystery' and McGinn's Mysterianism.

McGinn 'takes it on faith' that all mental activity is brain activity.

It seems to me just as reasonable to suppose that the brain is a transmitter of thought, and that thought and brain are not the same, just as my voice and the phone I use to call someone are not the same. It is I you talk to over the phone, not the phone.