When I was in graduate school, I recall hearing “One starts as a materialist, then one becomes a dualist, then a panpsychist, and one ends up as an idealist”. I don’t know where this comes from, but I think the idea was something like this. First, one is impressed by the successes of science, endorsing materialism about everything and so about the mind. Second, one is moved by problem of consciousness to see a gap between physics and consciousness, thereby endorsing dualism, where both matter and consciousness are fundamental. Third, one is moved by the inscrutability of matter to realize that science reveals at most the structure of matter and not its underlying nature, and to speculate that this nature may involve consciousness, thereby endorsing panpsychism. Fourth, one comes to think that there is little reason to believe in anything beyond consciousness and that the physical world is wholly constituted by consciousness, thereby endorsing idealism.

David Chalmers, ‘Idealism and the Mind-Body Problem’, in William Seager (ed.), The Routledge Handbook of Panpsychism, New York, 2018