But we must add a little more yet to our definition, thoroughly to understand what an Ideal means. A wrong idea may be a fixed idea — a fixed idea which is not in harmony with facts and with the nature Of things. Such a fixed idea makes the maniac, but not the Hero or the Saint. SO we must prefix an adjective to the word idea. It must be a right idea, a true idea, one which is in harmony with facts and at one with truth.