The human story does not always unfold like a mathematical calculation on the principle that two and two make four. Sometimes in life they make five or minus three; and sometimes the blackboard topples down in the middle of the sum and leaves the class in disorder and the pedagogue with a black eye.
I am never to act otherwise than so that I could also will that my maxim should become a universal law. Ich soll niemals anders verfahren, als so, dass ich auch wollen könne, meine Maxime solle ein allgemeines Gesetz werden.
The Ego’s relation to the Id might be compared with that of a rider to his horse. The horse supplies the locomotive energy, while the rider has the privilege of deciding on the goal and of guiding the powerful animal’s movement. But only too often there arises between the Ego and the Id the not precisely ideal situation of the rider being obliged to guide the horse along the path by which it itself wants to go.