"As you ought not to attempt to cure the eyes without the head, or the head without the body, so neither ought you to attempt to cure the body without the soul; and this... is the reason why the cure of many diseases is unknown to the physicians of Greece (Hellas), because they are ignorant of the whole, which ought to be studied also; for the part can never be well unless the whole is well."
 - Plato, Charmides