I could no more ram religious conviction into an atheist than I could ram a joke into a Scotchman. The only hope of ‘converting’ the latter is that through contact with merry-minded companions he may begin to realize that he is missing something in life which is worth attaining. Probably in the recesses of his solemn mind there exists inhibited the seed of humour, awaiting an awakening by such am impulse. The same advice would seem to apply to the propagation of religion; it has, I believe, the merit of being entirely orthodox advice.
Arthur S Eddington, (Britsch astrophysists) “The Nature of the Physical World”, 1935