“The same equations have the same solutions”
volume II; lecture 12, "Electrostatic Analogs"; p. 12-1
The Feynman Lectures on Physics (1964)
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Richard Feynman 181
American theoretical physicist 1918–1988Related quotes

Day of Affirmation Address (1966)
Context: All do not develop in the same manner, or at the same pace. Nations, like men, often march to the beat of different drummers, and the precise solutions of the United States can neither be dictated nor transplanted to others. What is important is that all nations must march toward increasing freedom; toward justice for all; toward a society strong and flexible enough to meet the demands of all its own people, and a world of immense and dizzying change.

“Seventy million people will talk about seventy million solutions to the same problem.”
The Black Coat (2013)
Source: A Funeral for the Eyes of Fire (1975), Chapter 14, “Denouement: Ascent to the Acropolis” (p. 266)
Source: The Physics Of Baseball (Second Edition - Revised), Chapter 2, The Flight Of The baseball, p. 22

[Scattering for the Yang-Mills equations, Trans. Amer. Math. Soc., 315, 1989, 823–832, 10.1090/S0002-9947-1989-0949897-7] (p. 823)

A Memoir on Algebraic Equations, Proving the Impossibility of a Solution of the General Equation of the Fifth Degree (1824) Tr. W. H. Langdon, as quote in A Source Book in Mathematics (1929) ed. David Eugene Smith

2002, "When select phrases are lifted and distorted out of context", 2002

"On one class of functional equations" (1936), as cited in: O'Connor, John J.; Robertson, Edmund F., " Leonid Kantorovich http://www-history.mcs.st-andrews.ac.uk/Biographies/Kantorovich.html", MacTutor History of Mathematics archive, University of St Andrews