No man is so foolish but may give another good counsel sometimes; and no man is so wise, but may easily err, if he will take no others counsel but his own. But very few men are wise by their own counsel; or learned by their own teaching. For he that was only taught by himself had a fool to his master.

The Works of Ben Jonson, which Were Formerly Printed in Two Volumes, are Now Reprinted in One (ed. 1692)