Pleasure fundamentalism is the view that moral value is pleasure and this explains all other moral facts. This talk presents two arguments for pleasure fundamentalism. The Reliability Argument examines how frequently the processes generating moral belief lead to truth, and finds the only reliable processes supporting pleasure fundamentalism.

The Universality Argument shows that any pleasure should please all metaphysically possible moral perceivers, giving pleasure universal moral value. Both arguments have foundations in an Einsteinian naturalism combining empiricism with a spacetime ontology, and avoiding behaviorism in favour of a more Humean psychology.