Flee laziness which while it produces an immediate delight, ends in the sorrow of repentance. And know that nature without exercise is a seed shut up in the pod, and art without practice is nothing.

Nothing, it appears to me, is of greater value in a man than the power of judgment; and the man who has it may be compared to a chest filled with books, for he is the son of nature and the father of art.

The art of war is like the art of the courtesan; indeed they might be called sisters, since both are slaves of desperation.

Nature without exercise is a seed shut up in a pod, and art without practice is nothing.