 Empiricism is also mistaken in its account of concept acquisition. There are certain simple concepts that cannot be acquired by abstraction from sensory data or from reflecting on the mind’s own operations. Among these are the basic concepts of ethics denoted by words such as: “right”, “wrong”, “good”, “bad”, “obligation”. While nothing in experience itself answers to these concepts, they can be grasped and applied correctly by the understanding to pick out genuine properties of agents and actions. Since we possess these moral concepts, which cannot arise in the ways that empiricists allow, the empiricism to which Locke and Hume subscribe must be false.