XXVIII. (141) But since Moses not only uses the expression, “he divided,” but says further, “he divided in the midst,” it is necessary to say a few words on the subject of equal divisions; for that which is divided skilfully just in the middle makes two equal divisions. (142) And no man could ever possibly divide anything into two exactly equal parts; but it is inevitable that one of the divisions must fall a little short, or exceed a little, if not much, at all events by a small quantity, in every instance, which indeed escapes the perception of our outward senses which attend only to the larger and more tangible burdens of nature and custom, but which are unable to comprehend atoms and indivisible things. (143) But it is established by the incorruptible word of truth that there is nothing equal in inequality. God alone therefore seems to be exactly just, and to be the only being able to divide in the middle bodies and things, in such a manner that none of the divisions shall be greater or less than the other by the smallest and most indivisible portion, and he alone is able to attain to sublime and perfect equality. (144) If therefore there were but one idea of perfect equality, what has been said would be quite sufficient for the purpose. But as there are many, we must not hesitate to add some considerations which are suitable. For the word “equal” is used in one sense when speaking of numbers, as when we say that two are equal to two, and three to three; and speak of other numbers in the same manner. But in another sense when speaking of magnitude, as equal in length or breadth, or depth, which are all different proportions. For wrestler compared with wrestler, or cubit with cubit are equal in magnitude but different in power, as is the case also with measures and weights. (145) But the idea of equality is a necessary one, and so is that of equality in proportion, according to which a few things are looked upon as equal to many, and small things are equal to larger ones. And their proportionate equality, cities are accustomed to use at suitable times, when they command every citizen to contribute an equal share of his property, not equal in number, but in proportion to the value of his assessment, so that in some cases he who contributes a hundred drachmas will appear to have brought an equal sum with him who contributes a talent.
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