Ehrenfels presents an interesting account of the golden ratio (1:1.618) as the point where the relations of similarity and difference are in balance, i.e., two magnitudes that stand to each other in the golden ratio are as similar as they are different. Towards the end of the work Ehrenfels’ discussion of higher-order relations and of comparisons of relations independently of their foundations leads him into formulations that could be seen as anticipating his later concept of Gestalt qualities.