Folk Psychology is faced with special difficulties here, since its conception of learning as the manipulation and storage of propositional attitudes founders on the fact that how to formulate, manipulate, and store a rich fabric of propositional attitudes is itself something that is learned, and is only one among many acquired cognitive skills. Folk Psychology would thus appear constitutionally incapable of even addressing the most basic mysteries.

p. 7 - Matter and Consciousness, 1984/1988/2013