Here we again take up the study of these first principles, not so much as they are concerned with the functioning of the faculty of common sense, but with reference to the classical proofs for Gods existence. We have set ourselves the task of demonstrating the necessity of these principles, their dependence upon the first principle, and their ontological and transcendent validity. It will seen that the proofs for Gods existence rest ultimately upon the principle of identity or of non-contradiction, their proximate basis being the principle of sufficient reason, and their immediate basis the principle of causality. . . .