"If the latter were the case, the would have to play a fundamental role in physics, heralding the advent of a new state of things, destined, perhaps, to transform completely our physical concepts which since the introduction of the infinitesimal calculus by Leibniz and Newton have been founded upon the assumption of the continuity of all causal chains of events."
January 1, 1970
https://en.wikiquote.org/wiki/The_Origin_and_Development_of_the_Quantum_Theory