We must not attach knowledge to the mind, we have to incorpo... - Michel de Montaigne, The Complete Essays

"Every other knowledge is harmful to him who does not have knowledge of goodness."

"I quote others only in order the better to express myself."

"Learned we may be with another man's learning: we can only be wise with wisdom of our own."

"Nothing is so firmly believed as that which we least know."

"There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent."