body, substance, and at last to being, thing, and such universal terms, which stand for any of our ideas whatsoever. To conclude: this whole mystery of genera and species, which make such a noise in the schools, and are with justice so little regarded out of them, is nothing else but abstract ideas, more or less comprehensive, with names annexed to them. In all which this is constant and invariable, that every more general term stands for such an idea as is but a part of any of those contained under it.'

The author adds, 'It is plain by what has been said, that general and universal belong not only to the real existence of things, but are the inventions and creatures of the understanding, made by it, for its own use, and concern only signs, whether words or ideas. Words are general, when used for signs of general ideas, and so are applicable indifferently to many particular things; and ideas are general when they are set up as the representatives of many particular things, but universality belongs not to things themselves, which are all of them particular in their existence, even those words and ideas which in their significations are general. When, therefore, we quit particulars, the generals that rest are only creatures of our own making, their general nature being nothing but the capacity they are put in to of signifying many particulars. For the signification they have is nothing but a relation, that by the mind of man is added to them.' See p. 15, vol. 2.

Mr. Locke at first here evidently supposes that we have ideas answering to general terms, i.e. certain ideas of such particulars as a number of things are found to agree in, or that there are some common qualities by retaining which and only leaving out what is peculiar and foreign, without adding anything new, we get at the general notion. He afterwards to all appearance reduces these general notions to mere signs or sounds with which several particular ideas are associated, but which do not correspond to any common properties or general nature really inhering in these particular things. In the same manner he continues to take different sides of the question, when he comes to treat of genera, and species, when his antipathy to the word essence constantly drives him back into the notion that all our ideas of essences are mere terms, and the want of solidity in that opinion again as constantly disposes him to admit a real difference in the sorts of things, besides the difference of the names we give to them. For immediately after affirming that the abstract essences of things are the workmanship of the understanding, he adds, I would not here be thought to forget, much less to deny, that nature, in the production of things makes several of them alike: there is nothing more obvious, especially in the races of animals, and all things propagated by seed.

But yet, I think we may say, the sorting of them by names is the workmanship of the understanding taking occasion from the similitude it observes amongst them to make abstract general ideas, and set them up as patterns in forms (for in that sense the word form has a very proper signification), to which as particular things existing are found to agree, so they come to be of that species, have that denomination, or are put into that class. For when we say this is a man, that a horse, &c. what do we else but rank things under different specific names, as agreeing to those abstract ideas, of which we have made these names the signs? And what are the essences of those species set out and marked by names, but those abstract ideas in the mind, which are as it were the bonds between particular things that exist,' &c. For my own part I must confess that I agree with the Bishop of Worcester on this occasion, who asks, 'What is it that makes Peter, James, and John real men? Is it the attributing the general name to them? No, certainly, but that the true and real essence of a man is in every one of them. They take their denomination of being men from that common nature or essence which is in them.' On the opposite system it is not the nature of the thing which determines the imposition of the name, but the imposition of the name which determines the nature of the thing; or giving them the name makes Peter, James, and John men, as in the opinion of some divines Baptism makes them Christians. That there is a real difference in things and ideas, answering to their general names, appears evident from this single observation, that if it were not so, we could never know how to apply these general names, and we could no more distinguish between a man and a horse than we could tell at first sight, that one man's proper name was John and another's Thomas. The puzzle about genera and species, in this view of the question, seems to arise from a very obvious transposition of ideas. Because the abstracting or separating these general ideas from particular circumstances is the workmanship of the understanding: it has, therefore, been inferred, that the ideas themselves are so too, and that they exist no where but in the mind which perceives them.

But I would fain ask, in the account which Mr. Locke gives of the abstract ideas of animal for example, whether body, sense, and motion, as they exist in different individuals, have not a general nature, or something common in all those individuals. If body in one case expresses the same thing, or same idea as body in another, their generals belong to things and ideas, as well as to names; if body in one case expresses quite a different thing in one to what it does in another, then it is not easy to imagine what determines the mind to apply the name to these different things, or on what foundation

Mr. Locke's definition rests. Extreme opinions were not in general the side on which Mr. Locke erred; and, on the present occasion, he has qualified his opposition to the prevailing system in such a manner, that it is difficult to say in what point he admitted or rejected it. He evidently, in the general scope of this argument, admits the reality of abstract ideas in the mind, though he denies the existence of real sorts, or nature of things of the mind to correspond to them: for the expressions which intimate any doubt of the former are occasional and parenthetical, and his acknowledgment that there is something in nature which guides and determines the mind in the sorting of things and giving names to them is equally extorted from him. There is none of this doubt and perplexity in the minds of his French commentators; none of this suspicion of error and anxious desire to correct it; no lurking objections arise to stagger their confidence in themselves; it is all the same light airy self-complacency; not a speck is to be seen in the clear sky of their metaphysics, not a cloud obscures the sparkling current of their thoughts. In the logic of Condillac, the whole question of abstract ideas, of genera and species, and of the nature of reasoning as founded upon them, is settled and cleared from all difficulties, past, present, and to come, with as little expence of thought, time, and trouble, as possible. possible. The Abbé demonstrates with ease. 'General ideas,' he says, ' of which we have explained the formation, are a part of the aggregate idea of each of the individuals to which they correspond, and they are considered, for this reason, as so many partial or imperfect ideas. The idea of man, for instance, makes part of the complex ideas of Peter and Paul, since it is equally to be found in both. There is no such thing as man in general. This partial idea has then no reality out of the mind, but it has one in the mind, where it exists separately from the aggregate or individual ideas of which it is a part. All our general ideas are then so many abstract ideas, and you see that we form them only in consequence of taking from each individual idea that which is common to all.

When, for

'But what, in truth, is the reality which a general and abstract idea has in the mind. It is nothing but a name: or, if it is any thing more, it necessarily ceases to be abstract, and general. example, I think of a man, I consider this word as a common denomination, in which case, it is very evident, that my idea is in some sort circumscribed within this name, that it does not extend to anything beyond it, and that consequently it is nothing but the name itself. If, on the contrary, thinking of man in general, I contemplate any thing in this word, besides the mere denomination, it can only be by representing myself to some one man; and a man can no more be

man in general, or in the abstract in my mind, than in nature. Abstract ideas are therefore only denominations. If we will absolutely think that they are something else, we shall only resemble a painter who should obstinately persist in painting the figure of a man in general, and who would still paint only individuals. This observation concerning abstract and general ideas, demonstrates that their clearness depends entirely on the order in which we have arranged the denominations of classes; and that, consequently, to determine this sort of ideas, there is only one means, which is to construct a language properly.

This confirms what we have already demonstrated, how necessary words are to us: for if we had no general terms, we should have no abstract ideas, we should have neither genera, or species, and without genera and species, we could reason upon nothing. But if we reason only by means of words this is a new proof that we can only reason well or ill, according as the language, in which we reason, is well or ill made. The analysis of our thoughts can only enable us to reason in proportion as by instructing us how to class our abstract ideas, it enables us how to form our language correctly, and the whole art of reasoning is thus reduced to the art of well speaking.'

What in this supremacy of words is to be the criterion of well speaking the Abbé does not say.

To speak, to reason, to form general or abstract ideas, are then in fact the same thing: and this truth, simple as it is, might pass for a discovery. Certainly, men in general have not had any notion of it; this is evident from the manner in which they speak and reason; it is evident from the abuse which they make of abstract ideas; finally, it is evident from the difficulties which those persons confessedly find in conceiving of abstract ideas who have so little in speaking of them.

'The art of reasoning resolves into the construction of languages, only because the order of our ideas itself depends entirely on the subordination that subsists between the names given to genera and species; and as we arrive at new ideas only by forming new classes, it follows that we can only determine or define our ideas by determining their classes. In this case we should reason well, because we should be guided by analogy in our conclusions as well as in the acceptation of words.

'Convinced, therefore, that classes or sorts of things are pure denominations, we shall never think of supposing that there exist in nature genera or species; and we shall understand by these words nothing but a certain mode of classing things according to the relations which they have to ourselves and to one another. We shall be

sensible that we can only discover those relations, and not what the things truly are.'

Berkeley handled his subjects with little tenderness, and he has perfectly anatomised this subject of abstract ideas. In choosing to answer the objections to this doctrine as stated by him, I shall not be accused of wishing to encounter a mean adversary. I can only trust to the goodness of my cause. I hope I shall be excused for going at some length into the argument, because it is one of the most difficult and complicated in itself, and is of the most extensive application to other questions relating to the human understanding. If we can come to any satisfactory issue to it, it will be worth the pains of enquiry.

It is agreed on all hands,' says this author, that the quantities or modes of things do never really exist in each of them, apart by itself, and separated from all others, but are mixed, as it were, and blended together, several in the same object. But we are told the mind being able to consider each quality singly, or abstracted from those other qualities with which it is united, does by that means frame to itself abstract ideas. For example, there is perceived by sight, an object, extended, coloured, and moved. This mixed idea the mind resolving into its simple constituent parts, and viewing each by itself exclusive of the rest, does frame the abstract ideas of extension, colour, and motion. Not that it is possible for colour or motion to exist without extension, but only that the mind can frame to itself by abstraction the idea of colour, exclusive of extension, and of motion exclusive both of colour and extension. Again, the mind having observed that in the particular extensions perceived by sense, there is something common and alike in all, and some other things peculiar, as this or that figure, or magnitude, which distinguish them one from another, it considers apart, or singles out by itself that which is most common, making thereof a most abstract idea of extension, line, surface, or solid, nor has any figure or magnitude, but is an idea prescinded from all these. So likewise the mind by leaving out of the particular colours perceived by sense, that which distinguishes them one from another, and retaining that which only is common to all, makes an idea of colour in abstract, which is neither red, nor blue, not white, &c. And in like manner by considering motion abstractedly, not only the body moved, but likewise from the figure it describes, and all particular directions and velocities, the abstract idea of motion is framed, which equally corresponds to all particular motions whatsoever that may be perceived by sense.

And as the mind frames to itself abstract ideas of qualities, or modes, so does it by the precision or mental separation, attain abstract