Albert Einstein (1879–1955) German-born physicist and founder of the theory of relativity
Letter to Morris Raphael Cohen, professor emeritus of philosophy at the College of the City of New York, defending the appointment of Bertrand Russell to a teaching position (19 March 1940).
1940s
Variant: Great spirits have always found violent opposition from mediocrities. The latter cannot understand it when a man does not thoughtlessly submit to hereditary prejudices but honestly and courageously uses his intelligence and fulfills the duty to express the results of his thoughts in clear form.