When a man reckons without the use of words, which may be done in particular things, as when upon the sight of any one thing, we conjecture what was likely to have preceded, or is likely to follow upon it; if that which he thought likely to follow, follows not, or that which he thought likely to have preceded it, hath not preceded it, this is called error; to which even the most prudent men are subject. But when we reason in words of general signification, and fall upon a general inference which is false, though it be commonly called error, it is indeed an absurdity, or senseless speech. For error is but a deception, in presuming that somewhat is past, or to come; of which, though it were not past, or not to come, yet there was no impossibility discoverable. But when we make a general assertion, unless it be a true one, the possibility of it is inconceivable. And words whereby we conceive nothing but the sound, are those we call absurd, insignificant, and nonsense. And therefore if a man should talk to me of a round quadrangle; or, accidents of bread in cheese; or, immaterial substances; or of a free subject; a free will; or any free, but free from being hindered by opposition, I should not say he were in an error, but that his words were without meaning, that is to say, absurd.

I have said before, in the [second] chapter, that a man did excel all other animals in this faculty, that when he conceived any thing whatsoever, he was apt to inquire the consequences of it, and what effects he could do with it. And now I add this other degree of the same excellence, that he can by words reduce the consequences he finds to general rules, called theorems, or aphorisms; that is, he can reason, or reckon, not only in number, but in all other things, whereof one may be added unto, or subtracted from another.

But this privilege is allayed by another; and that is, by the privilege of absurdity; to which no living creature is subject, but man only. And of men, those are of all most subject to it, that profess philosophy. For it is most true that Cicero saith of them somewhere; that there can be nothing so absurd, but may be found in the books of philosophers. And the reason is manifest. For there is not one of them that begins his ratiocination from the definitions, or explications of the names they are to use; which is a method that hath been used only in geometry; whose conclusions have thereby been made indisputable.

Causes of absurdity.

I. The first cause of absurd conclusions I ascribe to the want of method; in that they begin not their ratiocination from definitions; that is, from settled significations of their words: as if they could cast account, without knowing the value of the numeral words, one, two, and three. And whereas all bodies enter into account upon divers considerations, which I have mentioned in the precedent chapter; these considerations being diversely named, divers absurdities proceed from the confusion, and unfit connexion of their names into assertions. And therefore,

II. The second cause of absurd assertions, I ascribe[ascribe] to the giving of names of bodies to accidents; or of accidents to bodies; as they do, that say, faith is infused, or inspired; when nothing can be poured, or breathed into anything, but body; and that, extension is body; that phantasms are spirits, &c.

III. The third I ascribe to the giving of the names of the accidents of bodies without us, to the accidents of our own bodies; as they do that say, the colour is in the body; the sound is in the air, &c.

IV. The fourth, to the giving of the names of bodies to names, or speeches; as they do that say, that there be things universal; that a living creature is genus, or a general thing, &c.

V. The fifth, to the giving of the names of accidents to names and speeches; as they do that say, the nature of a thing is its definition; a man’s command is his will; and the like.

VI. The sixth, to the use of metaphors, tropes, and other rhetorical figures, instead of words proper. For though it be lawful to say, for example, in common speech, the way goeth, or leadeth hither, or thither; the proverb says this or that, whereas ways cannot go, nor proverbs speak; yet in reckoning, and seeking of truth, such speeches are not to be admitted.