Discourses

if the premises continue to the end such as they were when they were granted, it is absolutely necessary for us to abide by what we have granted, and we must accept their consequences: but if the premises do not remain55 such as they were when they were granted, it is absolutely necessary for us also to withdraw from what we granted, and from accepting what does not follow from the words in which our concessions were made. For the inference is now not our inference, nor does it result with our assent, since we have withdrawn from the premises which we granted. We ought then both to examine such kinds of premises, and such change and variation of them (from one meaning to another), by which in the course of questioning or answering, or in making the syllogistic conclusion, or in any other such way, the premises undergo variations, and give occasion to the foolish to be confounded, if they do not see what conclusions (consequences) are. For what reason ought we to examine? In order that we may not in this matter be employed in an improper manner nor in a confused way.

And the same in hypotheses and hypothetical arguments; for it is necessary sometimes to demand the granting of some hypothesis as a kind of passage to the argument which follows. Must we then allow every hypothesis that is proposed, or not allow every one? And if not every one, which should we allow? And if a man has allowed a hypothesis, must he in every case abide by allowing it? or must he sometimes withdraw from it, but admit the consequences and not admit contradictions? Yes; but suppose that a man says, If you admit the hypothesis of a possibility, I will draw you to an impossibility. With such a person shall a man of sense refuse to enter into a contest, and avoid discussion and conversation with him? But what other man than the man of sense can use argumentation and is skillful in questioning and answering, and incapable of being cheated and deceived by false reasoning? And shall he enter into the contest, and yet not take care whether he shall engage in argument not rashly and not carelessly? And if he does not take care, how can he be such a man as we conceive him to be? But without some such exercise and preparation, can he maintain a continuous and consistent argument? Let them show this; and all these speculations (θεωρήματα) become superfluous, and are absurd and inconsistent with our notion of a good and serious man.

Why are we still indolent and negligent and sluggish, and why do we seek pretences for not laboring and not being watchful in cultivating our reason? If then I shall make a mistake in these matters may I not have killed my father? Slave, where was there a father in this matter that you could kill him? What then have you done? The only fault that was possible here is the fault which you have committed. This is the very remark which I made to Rufus56 when he blamed me for not having discovered the one thing omitted in a certain syllogism: I suppose, I said, that I have burnt the Capitol. Slave, he replied, was the thing omitted here the Capitol? Or are these the only crimes, to burn the Capitol and to kill your father? But for a man to use the appearances presented to him rashly and foolishly and carelessly, and not to understand argument, nor demonstration, nor sophism, nor, in a word, to see in questioning and answering what is consistent with that which we have granted or is not consistent; is there no error in this?

VIII

That the Faculties57 Are Not Safe to the Uninstructed

In as many ways as we can change things58 which are equivalent to one another, in just so many ways we can change the forms of arguments (ἐπιχειρήματα) and enthymemes59 (ἐνθυμήματα) in argumentation. This is an instance: if you have borrowed and not repaid, you owe me the money: you have not borrowed and you have not repaid; then you do not owe me the money. To do this skillfully is suitable to no man more than to the philosopher; for if the enthymeme is an imperfect syllogism, it is plain that he who has been exercised in the perfect syllogism must be equally expert in the imperfect also.

Why then do we not exercise ourselves and one another in this manner? Because, I reply, at present, though we are not exercised in these things and not distracted from the study of morality, by me at least, still we make no progress in virtue. What then must we expect if we should add this occupation? and particularly as this would not only be an occupation which would withdraw us from more necessary things, but would also be a cause of self-conceit and arrogance, and no small cause. For great is the power of arguing and the faculty of persuasion, and particularly if it should be much exercised and also receive additional ornament from language: and so universally, every faculty acquired by the uninstructed and weak brings with it the danger of these persons being elated and inflated by it. For by what means could one persuade a young man who excels in these matters that he ought not to become an appendage60 to them, but to make them an appendage to himself? Does he not trample on all such reasons, and strut before us elated and inflated, not enduring that any man should reprove him and remind him of what he has neglected and to what he has turned aside?

“What then, was not Plato a philosopher?”61 I reply: and was not Hippocrates a physician? but you see how