Robert G. Ingersoll on Doubt

“I will not attack your doctrines nor your creeds if they accord liberty to me. If they hold thought to be dangerous — if they aver that doubt is a crime, then I attack them one and all, because they enslave the minds of men.”

“Fear believes — courage doubts. Fear falls upon the earth and prays — courage stands erect and thinks. Fear is barbarism — courage is civilization. Fear believes in witchcraft, in devils and in ghosts. Fear is religion — courage is science.”