CHAPTER I ΠΝΕΥ͂ΜΑ, ΨΥΧΉ, AND ΣΆΡΞ IN GREEK WRITERS FROM HOMER TO ARISTOTLE The three Greek words that stand at the head of this chapter have all had a long history. The earliest instance of πνεῦμα in extant Greek literature is in Aeschylus, of the fifth century B.C., but Diogenes Laertius ascribes it, apparently as a term in familiar use, to Xenophanes of the sixth century. Ψυχή and σάρξ occur in the earliest Greek writers whose writings we possess. All three are still in use today. In the period