The definitive international edition of the world-famous classic "Laws of Form" - fully translated into German. Thomas Wolf and Spencer-Brown worked closely together on the translation. This edition now also includes as bonus material the first-ever proof of the famous Four Color Theorem, which mathematicians believed would never be proven. This part is in English and comprises approximately 70 pages. Regarding the content in German: The British graph and number theorist J.C.P. Miller at the University of Cambridge, who was the first mathematician to follow Professor Spencer-Brown's proof of the famous Four Color Theorem for maps, stated: "His proof of the Four Color Theorem is the most exciting piece of mathematical detective work I have ever seen. There is no doubt that he did it.".