1 6 8 D O C U M E N T 1 5 8 R E P O R T O N D A V O S L E C T U R E Let us not forget that this enterprise is also splendidly suited to establishing re- lations between people of various nationalities, which favor the strengthening of a feeling of European community. The effectiveness of the new institution in this connection is all the more advantageous in that the circumstances of its foundation excluded political intentions right from the beginning. One can best serve the goal of mutual international understanding by working together on a life-sustaining project. From all these points of view, I am very happy that the dynamism and sa- gacity of the institutions of the Davos University Courses have prevailed over the difficulties of founding such an enterprise.[8] May they thrive, continue to provide an enrichment to many worthwhile people, and free some of them from the poverty of life in the sanatorium.[9] 158. Report on Davos Lecture [Davos, ca. 18 March 1928][1] A.E. spoke on the basic concepts of physics and their evolution, right up to the most recent phases of development.[2] Stages: Euclidean geometry as the study of the positioning of bodies, classical mechanics with action-at-a-distance, whose consistent application led to the molecular theory. Development of field theory from electromagnetism (Faraday-Maxwell). Relativity theory as an extension of field theory. Latest phase of development characterized by theories that are in principle sta- tistical, with doubts or negation of the principle of causality. Wave theory of matter as a development analogous to that of the theory of radiation. 159. Calculation [Berlin, after 18 March 1928][1] [Not selected for translation.]