Diogenes of Apollonia, a Greek philosopher of the Ionic school, and an adherent of Anaximenes (q.v.), if of any one, being more of an eclectic than anything else; took more to physics than philosophy; contributed nothing to the philosophic movement of the time.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Diogenes Laërtius * Diogenes the Cynic