Religion has ever filled the mind of man with darkness, and kept him in ignorance of his real duties and true interests. It is by dispelling the clouds and phantoms of religion, that we shall discover truth, morality and reason. Religion diverts us from the causes of evils, and from these remedies which nature advocates, far from curing; it only aggravates, perpetuates and multiplies them.

Nature, you say, is totally inexplicable without a God. That is to say, to explain what you understand very little, you have need of a cause which you understand not at all.

It is thus religion infatuates man from his infancy, fills him with vanity and fanaticism: if he has a heated imagination it drives him on to fury; if he has activity, it makes him a madman, who is frequently as cruel to himself, as he is dangerous and incommodious to others: if, on the contrary, he be phlegmatic or of a slothful habit, he becomes melancholy and is useless to society.

If experience be consulted, it will be found there is no action, however abominable, that has not received the applause of some people. Parricide - the sacrifice of children - robbery - usurpation - cruelty - intolerance - prostitution, have all in their turn been licensed actions, and have been deemed laudable and meritorious deeds with some nations of the earth. Above all, Religion has consecrated the most unreasonable, the most revolting customs.

All religious notions are uniformly founded on authority; all the religions of the world forbid examination, and are not disposed that men should reason upon them.

The source of man's unhappiness is his ignorance of Nature.

When we examine the opinions of men, we find that nothing is more uncommon, than common sense; or, in other words, they lack judgment to discover plain truths, or to reject absurdities, and palpable contradictions.