kind." He then, very wisely quitting this principle which would certainly be of no use to him, proceeds directly to account for the identity of different things from a continuance, not of the same substance, but of the same essence, or of the characteristic properties of any thing, carried on in succession; as a river is the same while it flows through the same channel, or an oak while it retains the same organization, and a man while he retains the same life and continued consciousness.

In the chapter entitled "Of true and false Ideas," the author supposes truth to depend on some mental or verbal proposition, and does not, like Hobbes and the modern metaphysical writers, make it consist entirely in a form of words. In the last chapter of the first volume he treats of the association of ideas. This chapter was added after the first edition of the work, and he confesses, that the subject was something new to him. He has treated it in that mixed way of observation and reasoning, in which the peculiar force of his mind lay. The account he has given of it does not form a system, but the fragments of a system, something like the French memoirs that are to serve for the materials of a history. He does not appear to have laid down any general theorem on the subject, or to have

been aware of the possibility of applying this principle to account in a plausible manner for the whole chain of our thoughts and feelings, as Hobbes and Hartley have done. Sound, practical, good sense, and a kind of discursive observation, neither grovelling in vulgar common place, nor soaring into the regions of paradox, are in fact the general characteristics of his mind, which has not been understood by his admirers and commentators. A short passage will suffice to show his manner of considering this doctrine of association.

"Many children," he says, "imputing the pain they endured at school to their books they were corrected for, so join those ideas together that a book becomes their aversion, and they are never reconciled to the study and use of them all their lives after: and thus reading becomes a torment to them, which otherwise possibly they might have made the great pleasure of their lives. There are rooms convenient enough that some men cannot study in, and fashions of vessels, which though ever so clean and commodious they cannot drink out of, and that by reason of some accidental ideas which are annexed to them, and make them offensive: and who is there that has not observed some man to flag at the appearance, or in the company of some cer

tain person, not otherwise superior to him, but because having once on some occasion got the ascendant, the idea of authority and distance goes along with that of the person? And he that has been thus subjected is not able to separate them. Instances of this kind are so plentiful every where, that if I add one more, it is only for the pleasant oddness of it: it is of a young gentleman, who having learned to dance, and that to great perfection, there happened to stand an old trunk in the room where he learned: the idea of this remarkable piece of household stuff had so mixed itself with all the turns and steps of his dances, that though in that chamber he could dance exceedingly well, yet it was only whilst that trunk was there; nor could he perform well in any other place, unless that, or some such other trunk had its due position in the room."

The following passage approaches the nearest to the statement of a general principle:

"This strong combination of ideas, not allied by nature, the mind makes in itself either voluntarily or by chance: and hence it comes in different men to be very different, according to their different inclinations, educations, interests, &c. Custom settles habits of thinking in the understanding, as well as of determining in the

will, and of motions in the body all which seems to be but trains of motion in the animal spirits, which once set agoing continue in the same steps they have been used to, which by often treading are worn into a smooth path, and the motion in it becomes easy, and as it were natural. As far as we can comprehend thinking, thus ideas seem to be produced in our minds; or if they are not, this may serve to explain their following one another in an habitual train when once they are put into that track, as well as it does to explain such motions of the body. A musician used to any tune will find, that let it but once begin in his head, the ideas of the several notes of it will follow one another orderly in his understanding, without any care or attention, as regularly as his finger moves orderly over the keys of the organ to play out the tune he has begun, though his inattentive thoughts be elsewhere a wandering. Whether the natural cause of these ideas, as well as of that regular dancing of the fingers, be the motion of his animal spirits, I will not determine, how probable soever by this instance it appears to be so; but this may help us a little to conceive of intellectual habits, and of the tying together of ideas. That there are such associations of them made by custom in the minds of

most men, I think nobody will question, who has well considered himself or others; and to this perhaps might be justly attributed most of the sympathies and antipathies observable in men, which work as strongly and produce as regular effects as if they were natural, and are therefore called so, though they at first had no other original but the accidental connexion of two ideas, which either the strength of the first impression or future indulgence so united, that they always afterwards kept company together in that man's mind, as if they were but one idea. say, most of the antipathies, I do not say all; for some of them are truly natural, depend upon our original constitution, and are born with us; but a great part of those which are counted natural, would have been known to be from unheeded though perhaps early impressions, or wanton fancies at first, which would have been acknowledged the original of them, if they had been warily observed.”

I

The former part of this passage, relating to the dancing of the animal spirits, the Abbé Condillac in his 'Logic' has paraphrased with a self-sufficiency, an assumption of originality, and a smoothness of flippancy, peculiar almost to himself.

On the subject of materialism, Mr Locke