“This is my doctrine: Give every other human being every right you claim for yourself.”

“This is my doctrine: Give every other human being every right you claim for yourself. Keep your mind open to the influences of nature. Receive new thoughts with hospitality. Let us advance.”

“As man develops, he places a greater value upon his own rights. Liberty becomes a grander and diviner thing. As he values his own rights, he begins to value the rights of others. And when all men give to all others all the rights they claim for themselves, this world will be civilized.”

“The real bible is not the work of inspired men, nor prophets, nor apostles, nor evangelists, nor of Christs. Every man who finds a fact, adds, as it were, a word to this great book. It is not attested by prophecy, by miracles or signs. It makes no appeal to faith, to ignorance, to credulity or fear. It has no punishment for unbelief, and no reward for hypocrisy. It appeals to man in the name of demonstration. It has nothing to conceal. It has no fear of being read, of being contradicted, of being investigated and understood. It does not pretend to be holy, or sacred; it simply claims to be true. It challenges the scrutiny of all, and implores every reader to verify every line for himself. It is incapable of being blasphemed. This book appeals to all the surroundings of man. Each thing that exists testifies of its perfection. The earth, with its forests and plains, its rocks and seas; with its every wave and cloud; with its every leaf and bud and flower, confirms its every word, and the solemn stars, shining in the infinite abysses, are the eternal witnesses of its truth.”

“Any doctrine that will not bear investigation is not a fit tenant for the mind of an honest man. Any doctrine that will not bear investigation is not a fit tenant for the mind of an honest man. Any man who is afraid to have his doctrine investigated is not only a coward but a hypocrite.”

“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.I attack the monsters, the phantoms of imagination that have ruled the world. I attack slavery. I ask for room -- room for the human mind.”

“My dog," he said, "just barks and plays -has all he wants to eat. He never works- has no trouble about business. In a little while he dies, and that is all. I work with all my strength. I have no time to play. I have trouble every day. In a little while I will die, and then I go to hell. I wish that I had been a dog.”