There are other people who in part agree and in part disagree with Socrates. They allow that nothing is able to prevail against knowledge, but do not allow that men never act contrary to what seems best; and so they say that the incontinent man, when he yields to pleasure, has not knowledge, but only opinion.

But if, in truth, it be only opinion and not knowledge, and if it be not a strong but a weak belief or judgment that opposes the desires (as is the case when a man is in doubt), we pardon a man for not abiding by it in the face of strong desires; but, in fact, we do not pardon vice nor anything else that we call blamable.