“My religious convictions and scientific views cannot at present be more specifically defined than as those of a believer in creative evolution. I desire that no public monument or work of art or inscription or sermon or ritual service commemorating me shall suggest that I accepted the tenets peculiar to any established church or denomination nor take the form of a cross or any other instrument of torture or symbol of blood sacrifice.[From the will of GBS]”

“For those scientists who take it seriously, Darwinian evolution has functioned more as a philosophical belief system than as a testable scientific hypothesis. This quasi-religious function of the theory is, I think, what lies behind many of the extreme statements that you have doubtless encountered from some scientists opposing any critical analysis of neo-Darwinism in the classroom. It is also why many scientists make public statements about the theory that they would not defend privately to other scientists like me.”

“Don't tell anyone, but on the pagan day of the sun god Ra, I kneel at the foot of an ancient instrument of torture and consume ritualistic symbols of blood and flesh. ...And if any of you care to join me, come to the Harvard chapel on Sunday, kneel beneath the crucifix, and take Holy Communion.”

“...evolution is not a religious tenet, to which one swears allegiance or belief as a matter of faith.. It is a factual reality of the empirical world. Just as one would not say 'I believe in gravity," one should not proclaim 'I believe in evolution.”

“I believe in an America where the separation of church and state is absolute - where no Catholic prelate would tell the President (should he be Catholic) how to act, and no Protestant minister would tell his parishioners for whom to vote - where no church or church school is granted any public funds or political preference - and where no man is denied public office merely because his religion differs from the President who might appoint him or the people who might elect him.I believe in an America that is officially neither Catholic, Protestant nor Jewish - where no public official either requests or accepts instructions on public policy from the Pope, the National Council of Churches or any other ecclesiastical source - where no religious body seeks to impose its will directly or indirectly upon the general populace or the public acts of its officials - and where religious liberty is so indivisible that an act against one church is treated as an act against all.[Remarks to the Greater Houston Ministerial Association, September 12 1960]”

“I do not believe in the creed professed by the Jewish church, by the Roman church, by the Greek church, by the Turkish church, by the Protestant church, nor by any church that I know of. My own mind is my own church.All national institutions of churches, whether Jewish, Christian, or Turkish, appear to me no other than human inventions set up to terrify and enslave mankind, and monopolize power and profit.”