Marriage and Morals prompted vigorous protests against and denunciations of Russell during his visit to the United States shortly after the book's publication. A decade later, the book, along with his protest against
US involvement in World War II and his generally controversial position in public discourse, cost him his professorial appointment at the
City College of New York, owing to a court judgment from a Catholic judge that his opinions made him "morally unfit" to teach. A public outcry, initiated by the mother of a student who was ineligible for his course in
mathematical logic, preceded the ruling.
John Dewey and several other intellectuals protested against his treatment.
Albert Einstein's often-quoted aphorism that "Great spirits have always encountered violent opposition from mediocre minds" is from his open letter in support of Russell. ==Eugenics==