After this, we come to explain the differences between things. And if we were to say that there is none, then all life would be thrown into confusion, as it is by Aristo. Nor could any office or work be found for wisdom, if there were actually no difference between one thing and another, and if there were no power of selection at all requisite to be exerted. Therefore, after it had been sufficiently established that that alone was good which was honourable, and that alone evil which was disgraceful, they asserted that there were some particulars in which those things which had no influence on the misery or happiness of life, differed from one another, so that some of them deserved to be esteemed, some to be despised, and others were indifferent. But as to those things which deserved to be esteemed, some of them had in themselves sufficient reason for being preferred to others, as good health, soundness of the senses, freedom from pain, glory, riches, and similar things. But others were not of this kind. And in like manner, as to those things which were worthy of no esteem at all, some had cause enough in themselves why they should be rejected, such as pain, disease, loss of senses, poverty, ignominy, and things like them, and some had not. And thus, from this distinction, came what Zeno called προηγμένον, and on the other hand what he called ἀποπροηγμένον, as though writing in so copious a language, he chose to employ new terms of his own invention; a license which is not allowed to us in this barren language of ours; although you often insist that it is richer than the Greek. But it is not foreign to our present subject, in order that the meaning of the word may be more easily understood, to explain the principle on which Zeno invented these terms. XVI. For as, says he, no one in a king’s palace says that the king is, as it were, led forward towards his dignity (for that is the real meaning of the word προηγμένον, but the term is applied to those who are of some rank whose order comes next to his, so as to be second to the kingly dignity); so in life too, it is not those things which are in the first rank, but those which are in the second which are called προηγμένα, or led forward. And we may translate the Greek by _productum_ (this will be a strictly literal translation), or we may call it and its opposite _promotum_ and _remotum_, or as we have said before, we may call προηγμένον, _præpositum_ or _præcipuum_, and its opposite _rejectum_. For when the thing is understood, we ought to be very ductile as to the words which we employ.