Some quotes from Mark Twain about religion.

Wikipedia: Samuel Langhorne Clemens (November 30, 1835 – April 21, 1910), better known by his pen name Mark Twain, was an American writer, humorist, entrepreneur, publisher, and lecturer.

All these quotes are from Mark Twain:

"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."

"Faith is believing what you know ain't so."

"If Christ were here now there is one thing he would not be – a Christian".

"Man is a Religious Animal. He is the only Religious Animal. He is the only animal that has the True Religion--several of them. He is the only animal that loves his neighbor as himself and cuts his throat if his theology isn't straight. He has made a graveyard of the globe in trying his honest best to smooth his brother's path to happiness and heaven."

"I do not fear death. I had been dead for billions and billions of years before I was born, and had not suffered the slightest inconvenience from it."

"Go to Heaven for the climate, Hell for the company."

"Man is a marvelous curiosity...he thinks he is the Creator's pet...he even believes the Creator loves him; has passion for him; sits up nights to admire him; yes and watch over him and keep him out of trouble. He prays to him and thinks he listens. Isn't it a quaint idea."

"Stripping away the irrational, the illogical, and the impossible, I am left with atheism. I can live with that."

"If there is a God, he is a malign thug."

"If the man doesn't believe as we do, we say he is a crank, and that settles it. I mean, it does nowadays, because now we can't burn him."

"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."

"You believe in a book that has talking animals, wizards, witches, demons, sticks turning into snakes, burning bushes, food falling from the sky, people walking on water, and all sorts of magical, absurd and primitive stories, and you say that we are the ones that need help?"

"There was no place in the land where the seeker could not find some small budding sign of pity for the slave. No place in all the land but one - the pulpit. It yielded last; it always does. It fought a strong and stubborn fight, and then did what it always does, joined the procession - at the tail end. Slavery fell. The slavery texts in the Bible remained; the practice changed; that was all."

"The Church worked hard at it night and day during nine centuries and imprisoned, tortured, hanged, and burned whole hordes and armies of witches, and washed the Christian world clean with their foul blood. Then it was discovered that there was no such thing as witches, and never had been. One doesn't know whether to laugh or to cry. Who discovered that there was no such thing as a witch - the priest, the parson? No, these never discover anything."

"The Church has opposed every innovation and discovery from the day of Galileo down to our own time, when the use of anesthetics in childbirth was regarded as a sin because it avoided the biblical curse pronounced against Eve."

"To trust the God of the Bible is to trust an irascible, vindictive, fierce and ever fickle and changeful master."

"Religion consists in a set of things which the average man thinks he believes and wishes he was certain of."

"The Bible is a mass of fables and traditions, mere mythology."

"In all the ages the Roman Church has owned slaves, bought and sold slaves, authorized and encouraged her children to trade in them. . . . There were the texts; there was no mistaking their meaning; . . . she was doing in all this thing what the Bible had mapped out for her to do. So unassailable was her position that in all the centuries she had no word to say against human slavery."

"Strange a God who mouths Golden Rules and forgiveness, then invented hell; who mouths morals to other people and has none Himself; who frowns upon crimes yet commits them all; who created man without invitation, then tries to shuffle the responsibility for man's acts upon man, instead of honorably placing it where it belongs, upon Himself; and finally with altogether divine obtuseness, invites this poor, abused slave to worship Him!"