“Socrates poisoned, Aristides ostracized, Aristotle fleeing for his life, Jesus crucified, Paul beheaded, Peter crucified head downward, Savonarola martyred, Spinoza hunted, tracked and cursed, and an order issued that no man should speak to him not supply him food or shelter, Bruno burned, Galileo imprisoned, Huss, Wyclif, Latimer and Tyndale used for kindling – all this in the name of religion, institutional religion, the one thing that has caused more misery, heartaches, bloodshed, war, than all other causes combined.”

“I believe in the same manner at this moment; and I moreover believe, that any system of religion that has anything in it that shocks the mind of a child, cannot be a true system.”

“It is impossible to derive happiness from the company of those whom we deprive of happiness.To be happy in old age it is necessary that we accustom ourselves to objects than can accompany the mind all the way through life, and that we take the rest as good in their day. The mere man of pleasure is miserable in old age; and the mere drudge in business is but little better: whereas, natural philosophy, mathematical and mechanical science, are a continual source of tranquil pleasure, and in spite of the gloomy study of the true theology; it teaches man to know and to admire the Creator, for the principles of science are in the creation, and are unchangeable, and of divine origin.”

“Persecution is not an original feature in any religion; but it is always the strongly marked feature of all religions established by law.”

“All the tales of miracles, with which the Old and New Testament are filled, are fit only for impostors to preach and fools to believe.”

“Is it more probable that nature should go out of her course or that a man should tell a lie? We have never seen, in our time, nature go out of her course. But we have good reason to believe that millions of lies have been told in the same time. It is therefore at least millions to one that the reporter of a miracle tells a lie. ”

“Later times have laid all the blame upon the Goths and Vandals, but, however unwilling the partizans of the Christian system may be to believe or to acknowledge it, it is nevertheless true, that the age of ignorance commenced with the Christian system.There was more knowledge in the world before that period, than for many centuries afterwards; and as to religious knowledge, the Christian system, as already said, was only another species of mythology; and the mythology to which it succeeded, was a corruption of an ancient system of theism.It is owing to this long interregnum of science, and to no other cause, that we have now to look back through a vast chasm of many hundred years to the respectable characters we call the Ancients. Had the progression of knowledge gone on proportionably with the stock that before existed, that chasm would have been filled up with characters rising superior in knowledge to each other; and those Ancients we now so much admire would have appeared respectably in the background of the scene. But the christian system laid all waste; and if we take our stand about the beginning of the sixteenth century, we look back through that long chasm, to the times of the Ancients, as over a vast sandy desert, in which not a shrub appears to intercept the vision to the fertile hills beyond.”

“I have always strenuously supported the right of every man to his own opinion, however different that opinion might be to mine. He who denies to another this right, makes a slave of himself to his present opinion, because he precludes himself the right of changing it.”

“One good schoolmaster is of more use than a hundred priests.”

“I do not believe in the creed professed by the Jewish church, by the Roman church, by the Greek church, by the Turkish church, by the Protestant church, nor by any church that I know of. My own mind is my own church.All national institutions of churches, whether Jewish, Christian, or Turkish, appear to me no other than human inventions set up to terrify and enslave mankind, and monopolize power and profit.”

“In stating these matters, I speak an open and disinterested language, dictated by no passion but that of humanity. To me, who have not only refused offers, because I thought them improper, but have declined rewards I might with reputation have accepted, it is no wonder that meanness and imposition appear disgustful. Independence is my happiness, and I view things as they are, without regard to place or person; my country is the world, and my religion is to do good.”

“The most detestable wickedness, the most horrid cruelties, and the greatest miseries, that have afflicted the human race have had their origin in this thing called revelation, or revealed religion. It has been the most dishonourable belief against the character of the divinity, the most destructive to morality, and the peace and happiness of man, that ever was propagated since man began to exist. It is better, far better, that we admitted, if it were possible, a thousand devils to roam at large, and to preach publicly the doctrine of devils, if there were any such, than that we permitted one such impostor and monster as Moses, Joshua, Samuel, and the Bible prophets, to come with the pretended word of God in his mouth, and have credit among us.Whence arose all the horrid assassinations of whole nations of men, women, and infants, with which the Bible is filled; and the bloody persecutions, and tortures unto death and religious wars, that since that time have laid Europe in blood and ashes; whence arose they, but from this impious thing called revealed religion, and this monstrous belief that God has spoken to man? The lies of the Bible have been the cause of the one, and the lies of the Testament of the other.”

“It is necessary to the happiness of man that he be mentally faithful to himself. Infidelity does not consist in believing, or in disbelieving, it consists in professing to believe what he does not believe.”

“When it can be said by any country in the world, my poor are happy, neither ignorance nor distress is to be found among them, my jails are empty of prisoners, my streets of beggars, the aged are not in want, the taxes are not oppressive, the rational world is my friend because I am the friend of happiness. When these things can be said, then may that country boast its constitution and government. Independence is my happiness, the world is my country and my religion is to do good.”

“The mind once enlightened cannot again become dark.”