Rand said her most important contributions to philosophy were her "theory of concepts, ethics, and discovery in politics that evil—the violation of rights—consists of the initiation of force". She believed epistemology was a foundational branch of philosophy and considered the advocacy of reason to be the single most significant aspect of her philosophy, stating: "I am not "primarily" an advocate of capitalism, but of egoism; and I am not "primarily" an advocate of egoism, but of reason. If one recognizes the supremacy of reason and applies it consistently, all the rest follows."