Can knowledge be defined? We expound an argument of John Cook Wilson's that it cannot. Cook Wilson's argument connects knowing with having the power to inquire. We suggest that if he is right about that connection, then knowledge is, indeed, indefinable.
| INTRODUCTIONCan knowledge be defined? That is, can knowledge be characterised completely by appeal to universals other than, and understandable independently of, itself? On pain of an infinite descent of definitions, it cannot be that every universal can be so characterised. Some universals must be in that sense indefinable. Is knowledge amongst them? Unlike the case of justified true belief, which seems to wear its definability on its sleeve, there is no obvious reason, available at the outset of inquiry, to expect that knowledge can be defined. As in other such cases, the initial burden of proof resides with those seeking to defend the claim that it can be. That is not yet to claim that the burden cannot be borne, or even that, at this late stage in ongoing inquiry, no reasons have been offered for accepting that the burden now resides with those in the other camp. It is to claim only that in the absence of a specific case for thinking that knowledge is definable, it is reasonable to hold that it is not. Against that dialectical background, John Cook Wilson argued that knowledge is indefinable.In his book Statement and Inference (1926), assembled from lecture notes and other materials by A. S.
L. Farquharson and published posthumously, Cook Wilson writes:Perhaps most fallacies in the theory of knowledge are reduced to the primary one of trying to explain the nature of knowing or apprehending. We cannot construct knowing-the act of apprehending-out of any elements. I remember quite early in my philosophical reflection having an instinctive aversion to the very expression "theory of knowledge". I felt the words themselves suggested a fallacy-an