Knowledge cannot then be something that just happens, inevitably happens, as the body gets old or the skin gets burned when exposed to the sunlight or to a flame. For understanding to be possible, then, humans must be able to create, to act as distinct from merely react. Therefore, understanding critically necessitates the possibility of creation, which implies the absence of a determinacy, and in that sense understanding must be self-created. This is the idea of intention or free-will. Morality, or moral knowledge, is a type of knowledge that owes its origin to that essentially unexplainable capacity to know. From that esoteric human capacity to transcend the determinacies of being we derive all our knowledge. One can make a distinction between two types of knowledge: technical knowledge about the properties of things whose origin is not epistemological and knowledge about knowledge.