However much you study, you cannot know without action. A donkey laden with books is neither an intellectual nor a wise man. Empty of essence, what learning has he whether upon him is firewood or book?
SaadiAvoid that which an enemy tells you to do; for if you follow his advice, you will smite your, knees with the hand of sorrow. If he shows you a road straight as an arrow, turn from it and go the other way.
Saadi