reception, and became popular. The general principle being once established without its particular consequences, and the public mind assured, it was soon found an easy task to point out the inconsistency of Mr. Locke’s reasoning in many respects, and to give a more decided tone to his philosophical system. Berkeley was one of the first who tried the experiment of pushing his principles into the verge of paradox on the question of abstract ideas, which he has done with admirable dexterity and clearness, but without going beyond the explicitness of Hobbes on the same question. Subsequent writers added different chapters to supply the deficiencies of the Essay, which, with scarcely a single exception, may be found essentially comprized in that institute and digest of modern philosophy, our author’s ‘Leviathan.’ In thus giving the praise of originality and force of mind to Hobbes, and regarding Locke merely as his follower, I may be thought to venture on dangerous ground, or to lay unhallowed hands on a reputation which is dear to every lover of truth. But if something is due to fame, something is also due to justice. I confess however, that having brought this charge against the ‘Essay on the Human Understanding,’ I am bound to make it good in the fullest manner; otherwise, I shall be inexcusable. What I therefore propose in the remainder of the present Essay is to show that Mr. Locke was not really the founder of the modern system of philosophy as it respects the human mind; and I shall think that I have sufficiently established this point, if I can make it appear, both that the principle itself on which that system rests, and all the striking consequences which have been deduced from it, are to be found in the writings of Hobbes, more clearly, decidedly, and forcibly expressed than they are in the ‘Essay on the Human Understanding.’ When I speak of the principle of the modern metaphysical system, I mean the assumption that the operations of the intellect are only a continuation of the impulses existing in matter, or that all the thoughts and conceptions of the mind are nothing more nor less than various modifications of the original impressions of things on a being endued with sensation or simple perception. This system considers ideas merely as they are caused by external objects, acting on the organs of sense, and tries to account for them on that hypothesis solely. It is upon this principle of excluding the understanding as a distinct faculty or power from all share in its own operations, that the whole of Hobbes’s reasoning proceeds. Let us see what he makes of it. The first part of the ‘Leviathan,’ entitled ‘Of Man,’ begins in this manner: