order. So I am able to distinguish whether it was proximity in time, or continuity in space, that occasioned me to recall B. on the mention of A. They cannot be indeed separated from contemporaneity; for that would be to separate them 5 from the mind itself. The act of consciousness is indeed identical with time considered in its essence. (I mean time per se, as contra-distinguished from our notion of time; for this is always blended with the idea of space, which, as the contrary of time, is therefore its measure.) Nevertheless To the accident of seeing two objects at the same moment acts as a distinguishable cause from that of having seen them at the same place and the true practical general law of association is this; that whatever makes certain parts of a total impression more vivid or distinct than the rest, will 15 determine the mind to recall these in preference to others equally linked together by the common condition of contemporaneity, or (what I deem a more appropriate and philosophical term) of continuity. But the will itself by confining and intensifying* the attention may arbitrarily 20 give vividness or distinctness to any object whatsoever; and from hence we may deduce the uselessness, if not the absurdity, of certain recent schemes which promise an artificial memory, but which in reality can only produce a confusion and debasement of the fancy. Sound logic, as the habitual 25 subordination of the individual to the species, and of the species to the genus; philosophical knowledge of facts under

* I am aware, that this word occurs neither in Johnson's Dictionary or in any classical writer. But the word," to intend," which Newton and others before him employ in this sense, is now so completely appropriated to another meaning, that I could not use it without ambiguity: while to paraphrase the sense, as by render intense, would often break up the sentence and destroy that harmony of the position of the words with the logical position of the thoughts, which is a beauty in all composition, and more especially desirable in a close philosophical investigation. I have therefore hazarded the word, intensify though, I confess, it sounds uncouth to my own ear.

the relation of cause and effect; a chearful and communicative temper disposing us to notice the similarities and contrasts of things, that we may be able to illustrate the one by the other; a quiet conscience; a condition free from anxieties; sound health, and above all (as far as relates to 5 passive remembrance) a healthy digestion; these are the best, these are the only ARTS OF MEMORY.

CHAPTER VIII

The system of DUALISM introduced by Des Cartes-Refined first by Spinoza and afterwards by Leibnitz into the doctrine of Harmonia præstabilita — Hylozoism. ·Materialism-Neither of these systems, or any possible theory of association, supplies or supersedes a theory of perception, or explains the formation of the associable.

To the best of my knowledge Des Cartes was the first philosopher, who introduced the absolute and essential heterogeneity of the soul as intelligence, and the body as 10 matter. The assumption, and the form of speaking have remained, though the denial of all other properties to matter but that of extension, on which denial the whole system of dualism is grounded, has been long exploded. For since impenetrability is intelligible only as a mode of 15 resistance; its admission places the essence of matter in an act or power, which it possesses in common with spirit; and body and spirit are therefore no longer absolutely heterogeneous, but may without any absurdity be supposed to be different modes, or degrees in perfection, of 20 a common substratum. To this possibility, however, it was not the fashion to advert. The soul was a thinking substance; and body a space-filling substance. Yet the apparent action of each on the other pressed heavy on the philosopher on the one hand; and no less heavily on the 25 other hand pressed the evident truth, that the law of causality holds only between homogeneous things, i. e.

things having some common property; and cannot extend from one world into another, its opposite. A close analysis evinced it to be no less absurd than the question whether a man's affection for his wife, lay North-east, or South-west 5 of the love he bore towards his child. Leibnitz's doctrine of a pre-established harmony, which he certainly borrowed from Spinoza, who had himself taken the hint from Des Cartes's animal machines, was in its common interpretation too strange to survive the inventor-too repugnant to our 10 common sense; (which is not indeed entitled to a judicial voice in the courts of scientific philosophy, but whose whispers still exert a strong secret influence.) Even Wolf, the admirer and illustrious systematizer of the Leibnitzian doctrine, contents himself with defending the possibility 15 of the idea, but does not adopt it as a part of the edifice.

The hypothesis of Hylozoism on the other side, is the death of all rational physiology, and indeed of all physical science; for that requires a limitation of terms, and cannot consist with the arbitrary power of multiplying attributes by 20 occult qualities. Besides, it answers no purpose; unless, indeed, a difficulty can be solved by multiplying it, or that we can acquire a clearer notion of our soul, by being told that we have a million souls, and that every atom of our bodies has a soul of its own. Far more prudent is it to admit the 25 difficulty once for all, and then let it lie at rest. There is a sediment indeed at the bottom of the vessel, but all the water above it is clear and transparent. The Hylozoist only shakes it up, and renders the whole turbid.

But it is not either the nature of man, or the duty of the 30 philosopher to despair concerning any important problem until, as in the squaring of the circle, the impossibility of a solution has been demonstrated. How the esse, assumed as originally distinct from the scire, can ever unite itself with it; how being can transform itself into a knowing, becomes 35 conceivable on one only condition; namely, if it can be

shown that the vis representativa, or the Sentient, is itself a species of being; i.e. either as a property or attribute, or as an hypostasis or self subsistence. The former is, indeed, the assumption of materialism; a system which could not but be patronized by the philosopher, if only it actually 5 performed what it promises. But how any affection from without can metamorphose itself into perception or will, the materialist has hitherto left, not only as incomprehensible as he found it, but has aggravated it into a comprehensible absurdity. For, grant that an object from without could 10 act upon the conscious self, as on a consubstantial object; yet such an affection could only engender something homogeneous with itself. Motion could only propagate motion. Matter has no Inward. We remove one surface, but to meet with another. We can but divide a particle into particles; 15 and each atom comprehends in itself the properties of the material universe. Let any reflecting mind make the experiment of explaining to itself the evidence of our sensuous intuitions, from the hypothesis that in any given perception there is a something which has been communicated to it by 20 an impact, or an impression ab extra. In the first place, by the impact on the percepient, or ens representans, not the object itself, but only its action or effect, will pass into the same. Not the iron tongue, but its vibrations, pass into the metal of the bell. Now in our immediate perception, it 25 is not the mere power or act of the object, but the object itself, which is immediately present. We might indeed attempt to explain this result by a chain of deductions and conclusions; but that, first, the very faculty of deducing and concluding would equally demand an explanation; 30 and secondly, that there exists in fact no such intermediation by logical notions, such as those of cause and effect. It is the object itself, not the product of a syllogism, which is present to our consciousness. Or would we explain this supervention of the object to the sensation, by a productive 35

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faculty set in motion by an impulse; still the transition, into the percepient, of the object itself, from which the impulse proceeded, assumes a power that can permeate and wholly possess the soul,

And how came the percipient here? And what is become of the wonder-promising MATTER, that was to perform all these marvels by force of mere figure, weight and motion ? 10 The most consistent proceeding of the dogmatic materialist is to fall back into the common rank of soul-and-bodyists; to affect the mysterious, and declare the whole process a revelation given, and not to be understood, which it would be prophane to examine too closely. "Datur non intelligitur." 15 But a revelation unconfirmed by miracles, and a faith not commanded by the conscience, a philosopher may venture. to pass by, without suspecting himself of any irreligious tendency.

Thus, as materialism has been generally taught, it is 20 utterly unintelligible, and owes all its proselytes to the propensity so common among men, to mistake distinct images for clear conceptions; and vice versa, to reject as inconceivable whatever from its own nature is unimaginable. But as soon as it becomes intelligible, it ceases to be 25 materialism. In order to explain thinking, as a material phænomenon, it is necessary to refine matter into a mere modification of intelligence, with the two-fold function of appearing and perceiving. Even so did Priestley in his controversy with Price! He stript matter of all its material 30 properties; substituted spiritual powers; and when we expected to find a body, behold! we had nothing but its ghost! the apparition of a defunct substance !

I shall not dilate further on this subject; because it will, (if God grant health and permission), be treated of at large