Edward Condon: Frases en inglés
Physics, in What is Science?: Twelve Eminent Scientists and Philosophers Explain Their Various Fields to the Layman, by James Roy Newman, published by Simon and Schuster (1955), p. 102
Constance Reid Hilbert (Springer-Verlag, 1996) [ISBN 0-387-94674-8] p. 182. Also quoted in Max Jammer, The Conceptual Development of Quantum Mechanics (McGraw-Hill, 1966) pp. 207-208. Jammer cites the original reference: Edward U. Condon 60 Years of Quantum Physics, Physics Today 15 37-49 (1962)