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...we have taught in the books to Glaucon. Moreover, the ends of these arts sometimes have a single series of things into which they are resolved: for example, the knowledge of truth is the end of logical contemplation. One ought to resolve it in this way: since truth is produced by demonstration, it cannot be had without demonstration. But because demonstration is a syllogismus syllogism, you will not know it unless you have first known the syllogism simply. Furthermore, you will not know the syllogism—being composed as it is of propositions—before the skill of these D [is acquired]. Again, because propositions are not learned without simple words, the force and power of simple words must be learned beforehand, just as those [propositions] are composed from them. Therefore, the end of logical contemplation, that is, the knowledge of truth, is first resolved into demonstration: afterwards, the demonstration into the syllogism: the latter into propositions: and these, into simple words. Nor does it proceed further through the resolution of its end than what constitutes the logical doctrine. For nothing remains into which its end could be resolved. Sometimes, however, an established end is resolved through many and diverse orders: which we shall reveal for the exercise of students by an example. Let peace be the established end: it is to be sought either E by victory or by friendship: victory, by war: war, by the forces of soldiers: soldiers, by money: but money is either already at hand, or...