"A truly rational theory would allow us to deduce the elementary particles (electron, etc.) and not be forced to state them a priori."
— Albert Einstein

January 1, 1970

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Albert Einstein
Original Language: English

Sources

Letter to Michele Besso (10 September 1952), Letter n°190, Correspondance, 1903-1955 (1972), by Pierre Speziali and Michele Angelo Besso