Book 2
24
Tell me then about what I should talk to you: about what matter are you able to listen?—About good and evil. —Good and evil in what? In a horse? No. Well, in an ox? No. What then? In a man? Yes. Do we know then what a man is, what the notion is which we have of him, or have we our ears in any degree practised about this matter? But do you understand what nature is? or can you even in any degree understand me when I say, I shall use demonstration to you? How? Do you understand his very thing, what demonstration is, or how any thing i, demonstrated, or by what means; or what things are like demonstration, but are not demonstration? Do you know what is true or what is false? What is consequent on a thing, what is repugnant to a thing, or not consistent, or inconsistent?See Schweig.’s note. But must I excite you to philosophy, and how? Shall I show to you the repugnance in the opinions of most men, through which they differ about things good and evil, and about things which are profitable and unprofitable, when you know not this very thing, what repugnance (contradiction) is? Show me then what I shall accomplish by discoursing with you: excite my inclination to do this. As the grass which is suitable, when it is presented to a sheep, moves its inclination to eat, but if you present to it a stone or bread, it will not be moved to eat; so there are in us certain natural inclinations also to speak, when the hearer shall appear to be somebody, when he himself shall excite us: but when he shall sit by us like a stone or like grass, how can he excite a man’s desire (to speak)? Does the vine say to the husbandman, Take care of me? No, but the vine by showing in itself that it will be profitable to the husbandman, if he does take care of it, invites him to exercise care. When children are attractive and lively, whom do they not invite to play with them, and crawl with them, and lisp with them? But who is eager to play with an ass or to bray with it? for though it is small, it is still a little ass.
