It is clear, however, that the distinguishing mark of the whole development of theoretical chemistry and physics is the elimination of the anthropomorphic elements, especially specific sense-impressions, from the concepts. This process is called by Prof. M. Planck the objectification of the physical system.

Introduction Note: Max Planck, "Acht Vorlesungen iiber theoretische Physik" (1910) - Higher Mathematics for Chemical Students (1911)