The Political Works of Thomas Hobbes (4 Books in One Edition). Thomas Hobbes
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7. For the manner by which we take notice of a conception past, we are to remember, that in the definition of imagination, it is said to be a conception by little and little decaying, or growing more obscure. An obscure conception is that which representeth the whole object together, but none of the smaller parts by themselves; and as more or fewer parts be represented, so is the conception or representation said to be more or less clear. Seeing then the conception, which when it was first produced by sense, was clear, and represented the parts of the object distinctly; and when it cometh again is obscure, we find missing somewhat that we expected; by which we judge it past and decayed. For example, a man that is present in a foreign city, seeth not only whole streets, but can also distinguish particular houses, and parts of houses; departed thence, he cannot distinguish them so particularly in his mind as he did, some house or turning escaping him; yet is this to remember the city; when afterwards there escapeth him more particulars, this is also to remember, but not so well. In process of time, the image of the city returneth, but as of a mass of building only, which is almost to have forgotten it. Seeing then remembrance is more or less, as we find more or less obscurity, why may not we well think remembrance to be nothing else but the missing of parts, which every man expecteth should succeed after they have a conception of the whole? To see at great distance of place, and to remember at great distance of time, is to have like conceptions of the thing: for there wanteth distinction of parts in both; the one conception being weak by operation at distance, the other by decay.
8. And from this that hath been said, there followeth, that a man can never know he dreameth; he may dream he doubteth, whether it be a DREAM or no: but the clearness of the imagination representeth every thing with as many parts as doth sense itself, and consequently, he can take notice of nothing but as present; whereas to think he dreameth, is to think those his conceptions past, that is to say, obscurer than they were in the sense: so that he must think them both as clear, and not as clear as sense; which is impossible.
9. From the same ground it proceedeth, that men wonder not in their dreams at places and persons, as they would do waking: for waking, a man would think it strange to be in a place wherein he never was before, and remember nothing of how he came there. But in a dream, there cometh little of that kind into consideration. The clearness of conception in a dream, taketh away distrust, unless the strangeness be excessive, as to think himself fallen from on high without hurt, and then most commonly he awaketh.
10. Nor is it impossible for a man to be so far deceived, as when his dream is past, to think it real: for if he dream of such things as are ordinarily in his mind,. and in such order as he useth to do waking, and withal that he laid him down to sleep in the place where he findeth himself when he awaketh (all which may happen) I know no Kritirion or mark by which he can discern whether it were a dream or not, and do therefore the less wonder to hear a man sometimes to tell his dream for a truth, or to take it for a vision.
Chapter 4: Of the Several Kinds of Discursion of the Mind
1. The succession of conceptions in the mind, their series or consequence of one after another, may be casual and incoherent, as in dreams for the most part; and it may be orderly, as when the former thought introduceth the latter; and this is discourse of the mind. But because the word discourse is commonly taken for the coherence and consequence of words, I will (to avoid equivocation) call it DISCURSION.
2. The cause of the coherence or consequence of one conception to another, is their first coherence, or consequence at that time when they were produced by sense. As for example: from St. Andrew the mind runneth to St. Peter, because their names are read together; from St. Peter to a stone, for the same cause; from stone to foundation, because we see them together; and for the same cause, from foundation to church, from church to people, and from people to tumult. And according to this example, the mind may run almost from any thing to any thing. But as to the sense the conception of cause and effect succeed one another. so may they after sense in the imagination. And for the most part they do so. The cause whereof is the appetite of them, who, having a conception of the end, have next unto it a conception of the next means to that end. As when a man, from the thought of honour to which he hath an appetite, cometh to the thought of wisdom, which is the next means thereto; and from thence to the thought of study, which is the next means to wisdom, etc.
3. To omit that kind of discursion by which we proceed from any thing to any thing, there are of the other kind divers sorts. As first in the senses: there are certain coherences of conceptions, which we may call RANGING. Examples whereof are: a man's casting his eye upon the ground, to look about for some small thing lost; the hounds casting about at a fault in hunting; and the ranging of spaniels. And herein we take a beginning arbitrarily.
4. Another sort of discursion is, when the appetite giveth a man his beginning, as in the example before adduced: where honour, to which a man hath appetite, maketh him to think upon the next means of attaining it, and that again of the next, &c. And this the Latins call sagacitas, SAGACITY, and we may call it hunting or tracing, as dogs trace the beast by the smell, and men hunt them by their footsteps; or as men hunt after riches, place, or knowledge.
5. There is yet another kind of discursion beginning with appetite to recover something lost, proceeding from the present backward, from the thought of the place where we miss it, to the thought of the place from whence we came last; and from the thought of that, to the thought of a place before, till we have in our mind some place, wherein we had the thing we miss: and this is called REMINISCENCE.
6. The remembrance of the succession of one thing to another, that is, of what was antecedent, and what consequent, and what concomitant, is called an EXPERIMENT; whether the same be made by us voluntarily, as when a man putteth any thing into the fire, to see what effect the fire will produce upon it; or not made by us, as when we remember a fair morning after a red evening. To have had many experiments, is that we call EXPERIENCE, which is nothing else but remembrance of what antecedents have been followed with what consequents.
7. No man can have in his mind a conception of the future, for the future is not yet. But of our conceptions of the past, we make a future; or rather, call past, future relatively. Thus after a man hath been accustomed to see like antecedents followed by like consequents, whensoever he seeth the like come to pass to any thing he had seen before, he looks there should follow it the same that followed then. As for example: because a man hath often seen offences followed by punishment, when he seeth an offence in present, he thinketh punishment to be consequent thereto. But consequent unto that which is present, men call future. And thus we make remembrance to be prevision or conjecture of things to come, or EXPECTATION or PRESUMPTION of the future.
8. In the same manner, if a man seeth in present that which he hath seen before, he thinks that that which was antecedent to what he saw before, is also antecedent to that he presently seeth. As for example: he that hath seen the ashes remain after the fire, and now again seeth ashes, concludeth again there hath been fire. And this is called CONJECTURE of the past, or presumption of fact.
9. When a man hath so often observed like antecedents to be followed by like consequents, that whensoever he seeth the antecedent, he looketh again for the consequent; or when he seeth the consequent, he maketh account there hath been the like antecedent; then he calleth both the antecedent and the consequent, SIGNS one of another, as clouds are a sign of rain to come, and rain of clouds past.
10. This taking of signs from experience, is that wherein men do ordinarily think, the difference stands between man and man in wisdom, by which they commonly understand a man's whole ability or power cognitive. But this is an error; for these signs are but conjectural; and according as they have often or seldom failed, so their assurance is more or less; but never full