If the account given in Genesis is really true, ought we not, after all, to thank this serpent? He was the first schoolmaster, the first advocate of … - Robert Green Ingersoll

What then is, or can be called, a moral guide? The shortest possible answer is one word: Intelligence. We want the experience of mankind, the true history of the race. We want the history of intellectual development, of the growth of the ethical, of the idea of justice, of conscience, of charity, of self-denial. We want to know the paths and roads that have been traveled by the human mind. These facts in general, these histories in outline, the results reached, the conclusions formed, the principles evolved, taken together, would form the best conceivable moral guide. We cannot depend on what are called “inspired books,” or the religions of the world. These religions are based on the supernatural, and according to them we are under obligation to worship and obey some supernatural being, or beings. All these religions are inconsistent with intellectual liberty. They are the enemies of thought, of investigation, of mental honesty. They destroy the manliness of man. They promise eternal rewards for belief, for credulity, for what they call faith. This is not only absurd, but it is immoral.

The earth, rotating at the rate of one thousand miles an hour, was stopped. The motion of this vast globe would have instantly been changed into heat. It has been calculated by one of the greatest scientists of the present day that to stop the earth would generate as much heat as could be produced by burning a world as large as this of solid coal. And yet, all this force was expended for the paltry purpose of defeating a few poor barbarians. The employment of so much force for the accomplishment of so insignificant an object would be as useless as bringing all the intellect of a great man to bear in answering the arguments of the clergymen of San Francisco.

There is a law higher than men can make. The facts as they exist in this poor world -- the absolute consequences of certain acts -- they are above all. And this higher law is the breath of progress, the very outstretched wings of civilization, under which we enjoy the freedom we have. Keep that in your minds. There never was a legislature great enough -- there never was a constitution sacred enough, to compel a civilized man to stand between a black man and his liberty. There never was a constitution great enough to make me stand between any human being and his right to express his honest thoughts. Such a constitution is an insult to the human soul, and I would care no more for it than I would for the growl of a wild beast.