“We do not aim at « mathematical rigour » of exposition, which in theoretical physics often amounts to self-deception.”

—  Evgeny Lifshitz

"Quantum Mechanics: Non-relativistic Theory", together with L. D. Landau, translated by John Menzies (third edition 1991), p. xi

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Evgeny Lifshitz1
Soviet physicist 1915–1985

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