DIOGENES APOLLONIATES (c. 46o B.C.), Greek natural philosopher, was a native of Apollonia in Crete. Although of Dorian stock, he wrote in the Ionic dialect, like all the physi ologi (physical philosophers). He moved to Athens, where his opinions once endangered his life. It is his theories that are ridi culed as those of Socrates in the Clouds (264 ff.). An eclectic in doctrine, he drew his views from many sources but his main position is a reconciliation of the theories of Anaximenes and Anaxagoras, which he achieved by taking Anaximenes' theory that air is the one source of being and attributing intelligence to it as well. His most important work was IIEpi c,56 news (De na tura), of which considerable fragments are extant (chiefly in Simplicius) ; it is possible that he wrote also Against the Sophists and On the Nature of Man, to which the well-known fragment about the veins would belong; possibly these discussions were subdivisions of his great work.
Fragments in F. Mullach, Fragmenta philosophorum Graecorum, i. (186o) ; F. Panzerbieter, Diogenes Apolloniates (1830) , with philoso phical dissertation; J. Burnet, Early Greek Philosophy (1892) ; H. Ritter and L. Preller, Historia Philosophiae (4th ed., 1869), §§ 59-68; E. Krause, Diogenes von A pollonia (1909).