"The longing to behold harmony is the source of the inexhaustible patience and perseverance with which Planck has devoted himself to the most general problems of our science. The state of mind which enables a man to do work of this kind is akin to that of the religious worshipper or the lover; the daily effort comes from no deliberate intention or program, but straight from the heart." ~ Albert Einstein
Introduction to quantum mechanics From above and from left to right: Max Planck, Albert Einstein, Niels Bohr, Louis de Broglie, Max Born, Paul Dirac, Werner Heisenberg, Wolfgang Pauli, Erwin Schrödinger, Richard Feynman.
Erich Salomon, Albert Einstein engaging in animated conversation with British Prime Minister Ramsay MacDonald, surrounded by a group of luminaries including the Nobel Prize-winner Max Planck, far right, and other German political and business leaders, smoking cigars and sipping cognac. The reception was given by Reich Chancellor Brüning in honour of the visiting British Prime Minister in August 1931.