APPENDIX E LECTURE AT KEIO UNIVERSITY The lecture was delivered at Keio University Hall, Tokyo, on 19 November 1922, and pub- lished under the title “Dr. Einstein’s Popular Lecture” on 22 and 23 November 1922 in Osaka Mainichi, English Daily Edition. “RELATIVITY AND LAWS OF NATURE” “The Universe is finite.” With these simple words uttered in his modest tone, despite their tremendous meaning, Dr. Albert Einstein closed his first popular lecture in Japan on Sunday afternoon. Hours before the lecture started, the Keio University auditorium was crowded with an audience, composed of men of all walks of life, students and men of sci- ence predominating. For this lecture, Dr. Einstein had set himself the theme that his Theory of Relativity is in agreement with the Laws of Nature. Having regard for his hearers, who did not all belong to those trained in higher mathematics and physics (the real scientific lec- tures will be given at the Imperial University at the end of this week), the lecturer carefully restrained himself so as to be as easily understandable as his theme would permit, but, now and then, chiefly during the second part of his lecture, rather difficult problems arose, and the brain of many an eager student was taxed to the very breaking point. For Dr. Einstein himself, the lecture, which lasted from 1.30 to 7.30 p.m. with only one interval, seemed to have no difficulty. Dispensing with all notes, he spoke without any visible effort, clearly and precisely, all the time his magnetic personality casting a spell over the audience. Every quarter of an hour or so he surrendered his chair to his interpreter, Dr. Ishiwara, the “Japa- nese Einstein”, whose rendering of the lecture from the German into Japanese, was beyond all praise. THE LECTURE “It is a great pleasure to introduce my ideas into Japan”, said Dr. Einstein, starting the lecture, which consisted of two parts, specific relativity and general relativity. “The whole theory springs from the one basic principle: motion is relative. But what is motion? A car is in motion! That means that, during a certain time, it comes in contact with different points of the earth’s surface. Motion means the relativity of one body to another.