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 gives standing-ground forever,”—who does not recognize in this the key-note of every system worthy of the name? A system, to be a system at all, must come as a closed system, reversible in this or that detail, perchance, but in its essential features never!

Scholastic orthodoxy, to which one must always go when one wishes to find perfectly clear statement, has beautifully elaborated this absolutist conviction in a doctrine which it calls that of ‘objective evidence.’ If, for example, I am unable to doubt that I now exist before you, that two is less than three, or that if all men are mortal then I am mortal too, it is because these things illumine my intellect irresistibly. The final ground of this objective evidence possessed by certain propositions is the adaequatio intellectus nostri cum re. The certitude it brings involves an aptitudinem ad extorquendum certum assensum on the part of the truth envisaged, and on the side of the subject a quietem in cognitione, when once the object is mentally received, that leaves no possibility of doubt behind; and in the whole transaction nothing operates but the entitas ipsa of the object and the entitas ipsa of the mind. We slouchy modern thinkers dislike to talk in Latin,—indeed, we dislike to talk in set terms at all; but at bottom our own state of mind is very much like this whenever we uncritically abandon ourselves: You believe in objective evidence, and I do. Of some things we feel that we are certain: we know, and we know that we do know. There is something that gives a click inside of us, a bell that strikes twelve, when the hands of our mental clock have swept the dial and meet over the meridian hour. The greatest empiricists among us are only empiricists on reflection: when