[213] Very beautifully, therefore, has the interpreter of the writings of nature, taking pity upon our idleness and want of consideration, taught every one of us in an invisible manner, as he does now, to arrange everything in such a way as to produce an exact opposition, not arranging them in wholes, but in equal divisions; for one thing consists of the two opposite parts; and when that one thing is bisected then the opposite parts are easily known.