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?

Virtue is in the mind, not in the appearance.

Every person thinks his own intellect perfect, and his own child handsome.

The sons of Adam are formed from dust; if not humble as the dust, they fall short of being men.

Whoever acquires knowledge but does not practice it is as one who ploughs but does not sow.

If a piece of worthless stone can bruise a cup of gold, its worth is not increased, nor that of the gold diminished.

However much you are read in theory, if thou hast no practice thou art ignorant