Christian creeds and doctrines, the clergy's own fatal inventions, through all the ages has made of Christendom a slaughterhouse, and divided it into sects of inextinguishable hatred for one another.
It has been a source of great pain to me to have met with so many among [my] opponents who had not the liberality to distinguish between political and social opposition; who transferred at once to the person, the hatred they bore to his political opinions.