Disputing premise 5: A person can be a wise moral teacher despite being delusional. Granting credence to some, or even most, of someone's claims does not require that we give credence to all of them. Someone can believe Socrates' philosophical claims about justice without also believing Socrates' theological speculations about the Greek gods, or accept Aristotle's views on poetry without also accepting his claim that heavier objects fall faster than lighter ones.