Psyche (psychology) - Ancient Psychology

Ancient Psychology

The idea of the Psyche is central to the philosophy of Plato. In his Phaedo, Plato has Socrates give four arguments for the immortality of the soul and life after death following the separation of the soul from the body. Plato's Socrates also states that after death the Psyche is better able to achieve wisdom and experience the Platonic forms since it is unhindered by the body.

The Greek philosopher Aristotle wrote an influential treatise on the psyche, called in Greek Περὶ Ψυχῆς (Perì Psūchês), in Latin De Anima and in English On the Soul. Aristotle's theory of the "three souls (psyches)" (vegetal, animal, and rational) would rule the field of psychology until the 19th century. Prior to Aristotle, a number of Greek writings used the term psyche in a less precise sense. In late antiquity, Galenic medicine developed the idea of three "spirits" (pneuma) corresponding to Aristotle's three souls. The pneuma psychikon corresponded to the rational soul. The other two pneuma were the pneuma physicon and the pneuma zoticon.