“The so-called Christian nations are the most enlightened and progressive ... but in spite of their religion, not because of it. The Church has opposed every innovation and discovery from the day of Galileo down to our own time, when the use of anesthetic in childbirth was regarded as a sin because it avoided the biblical curse pronounced against Eve. And every step in astronomy and geology ever taken has been opposed by bigotry and superstition. The Greeks surpassed us in artistic culture and in architecture five hundred years before Christian religion was born.”

“So much blood has been shed by the Church because of an omission from the Gospel: "Ye shall be indifferent as to what your neighbor's religion is." Not merely tolerant of it, but indifferent to it. Divinity is claimed for many religions; but no religion is great enough or divine enough to add that new law to its code.”

“There is one notable thing about our Christianity: bad, bloody, merciless, money-grabbing, and predatory. The invention of hell measured by our Christianity of today, bad as it is, hypocritical as it is, empty and hollow as it is, neither the deity nor his son is a Christian, nor qualified for that moderately high place. Ours is a terrible religion. The fleets of the world could swim in spacious comfort in the innocent blood it has spilled.”

“As far as I can see, Italy, for fifteen hundred years, has turned all her energies, all her finances, and all her industry to the building up of a vast array of wonderful church edifices, and starving half her citizens to accomplish it. She is today one vast museum of magnificence and misery. All the churches in an ordinary American city put together could hardly buy the jeweled frippery in one of her hundred cathedrals. And for every beggar in America, Italy can show a hundred - and rags and vermin to match. It is the wretchedest, princeliest land on earth. Look at the grande Doumo of Florence - a vast pile that has been sapping the purses of her citizens for five hundred years, and is not nearly finished yet. Like all other men, I fell down and worshiped it, but when the filthy beggars swarmed around me the contrast was too striking, too suggestive, and I said. "Oh, sons of classic Italy, is the spirit of enterprise, of self-reliance, of noble endeavor, utterly dead within ye? Curse your indolent worthlessness, why don't you rob your church?”

“Of all the various kinds of sexual intercourse, this has the least to recommend it. As an amusement, it is too fleeting; as an occupation, it is too wearing; as a public exhibition, there is no money in it. It is unsuited to the drawing room, and in the most cultured society it has long been banished from the social board. It has at last, in our day of progress and improvement, been degraded to brotherhood with flatulence. Among the best bred, these two arts are now indulged in only private--though by consent of the whole company, when only males are present, it is still permissible, in good society, to remove the embargo on the fundamental sigh.”

“One must make allowances for a parental instinct that has been starving for twenty-five or thirty years. It is famished, it is crazed with hunger by that time, and will be entirely satisfied with anything that comes handy; its taste is atrophied, it can't tell mud cat from shad. A devil born to a young couple is measurably recognizable by them as a devil before long, but a devil adopted by an old couple is an angel to them, and remains so, through thick and thin.”

“there was no crime in unconscious plagiarism; that I committed it everyday, that he committed it everyday, that every man alive on earth who writes or speaks commits it every day and not merely once or twice but every time he open his mouth… there is nothing of our own in it except some slight change born of our temperament, character, environment, teachings and associations”