Report Ayn Rand's Evidence in Metaphysics and Epistemology Posted July 13, 2010 All human "sciences" must begin with axioms, self-evident truths. Including, properly, philosophy. Otherwise you are caught in an endless progression backwards..."What is the proof that the proof you offered is correct? And the proof that that proof is correct?" Ayn Rand quite clearly laid out the axioms. They are ultimately the evidence for everything in Objectivism, and that is one of its beauties.