"Neither let the consideration of idle, vain fellows withdraw you from your purpose; I say of them, of whom it is said, " The wearied ox treads hard, " whereas no man, to the judgment of the wise, can be truly learned who is sworn to the rudiments of one only faculty... Yet this one rule I advise you to observe that you communicate vulgar secrets to vulgar friends, but higher and secret to higher and secret friends only: Give hay to an ox, sugar to a parrot only. Understand my meaning, lest you be trod under the oxen's feet, as oftentimes it falls out."