The concept of Ganzheitspsychologie in Heidelberg was related to and supported by the individual. This was not just the case with the ever-present Ehrenfels criteria, according to which the sum was more than the total of its parts. As Krueger's student, Rudert was deeply convinced that the individual was ineffable, and he respected the individual or "Person" in all her/his fundamental unfathomability. What remained recognizable was only recognized by one person considering another person directly. For the Heidelberg holistic psychologists the "consensus of the wise" did not mean a consensus of souls; it was rather through the exchange of ideas, an approach to an agreed path of understanding. Not in any way a doctrine of the "eyes of innocence" but rather the effort to reach a consensus of non-prejudice. Heidelberg's Ganzheitspsychologie held a central place at a time when German psychology was re-emerging and finding itself again.