 It is rather amazing that the great Diels, who clearly was aware of the importance of the diaeretic method in Aristotle’s writings and in Theophrastus’ De Sensibus, failed to apply this insight to the Placita literature. The diaphonic organization, moreover, of chapters containing tenets that are listed according to criteria determined by various divisions obviously determines not only the presentation but also, to some extent, the contents of the material.