Older and better than Freud

"The spirit of man does not know all that is in man,
nor all of the thoughts which he has, willingly or unwillingly.

"Man does not always perceive his thoughts as they really are.
Having clouded vision,
he does not discern them clearly with his mind's eye....

"Now no one can test the spirits to see if they are from God
unless God has given him discernment of spirits
to enable him to investigate
spiritual thoughts, inclinations and intentions
with honest and true judgment.
Discernment is the mother of all the virtues;
everyone needs it either to guide the lives of others
or to direct and reform his own life."

From a treatise by Bishop Baldwin of Canterbury, d.1190