Acts 26:24

And as he was saying these things in his defense , Festus said with a loud voice , Paul , you are out of your mind ; your great learning is driving you out of your mind .

At this point Festus interrupted Paul`s defense. “You are out of your mind, Paul!” he shouted. “Your great learning is driving you insane.”

And as he thus spake for himself, Festus said with a loud voice, Paul, thou art beside thyself; much learning doth make thee mad.