Fifth Solvay International Conference on Electrons and Photons, where the world’s most notable physicists met to discuss the newly formulated quantum theory. The leading figures were Albert Einstein and Niels Bohr.
Einstein, disenchanted with Heisenberg’s uncertainty principle, remarked “God does not play dice”.
Bohr replied, “Einstein, stop telling God what to do”.
17 of the 29 attendees were or became Nobel Prize winners, including Marie Curie.