Why did you want to be elected governor of the Cnossians? Because of your opinion. Why are you going to Rome now? Because of your opinion. And why are you going in winter, with danger and expense? "I have to go." What tells you that? Your opinion. So if opinions cause all actions, and someone has bad opinions, then bad results follow bad causes. Do we all have good opinions — you and your opponent? How are you different from him? Do you have better opinions than your opponent? Why? Because you think so. And he thinks his opinions are better too. So do crazy people. That's a terrible way to judge.
For what is the reason why you desired to be elected governor of the Cnossians? Your opinion. What is the reason that you are now going up to Rome? Your opinion. And going in winter, and with danger and expense? I must go. What tells you this? Your opinion. Then if opinions are the causes of all actions, and a man has bad opinions, such as the cause may be, such also is the effect! Have we then all sound opinions, both you and your adversary? And how do you differ? But have you sounder opinions than your adversary? Why? You think so. And so does he think that his opinions are better; and so do madmen. This is a bad criterion.