Morality is founded upon the relations, wants, and constant interests of mankind; the relations, which subsist between God and Men, are either perfectly unknown, or imaginary. Religion, by associating God with Man, has wisely weakened, or destroyed, the bonds, which unite them. Mortals imagine, they may injure one another with impunity, by making suitable satisfaction to the almighty being, who is supposed to have the right of remitting all offences committed against his creatures.
Is any thing better calculated to encourage the wicked or harden them in crimes, than to persuade them that there exists an invisible being, who has a right to forgive acts of injustice, rapine, and outrage committed against society? By these destructive ideas, perverse men perpetrate the most horrid crimes, and believe they make reparation by imploring divine mercy; their conscience is at rest, when a priest assures them that heaven is disarmed by a repentance, which, though sincere, is very useless to the world.
In the mind of a devout man, God must be regarded more than his creatures; it is better to obey him, than men. The interests of the celestial monarch must prevail over those of weak mortals. But the interests of heaven are obviously those of its ministers; whence it evidently follows, that in every religion, priests, under pretext of the interests of heaven or the glory of God, can dispense with the duties of human Morality, when they clash with the duties, which God has a right to impose. Besides, must not he, who has power to pardon crimes, have a right to encourage the commission of crimes?
171.
We are perpetually told, that, without a God there would be no moral obligation; that the people and even the sovereigns require a legislator powerful enough to constrain them. Moral constraint supposes a law; but this law arises from the eternal and necessary relations of things with one another; relations, which have nothing common with the existence of a God. The rules of Man's conduct are derived from his own nature which he is capable of knowing, and not from the Divine nature of which he has no idea. These rules constrain or oblige us; that is, we render ourselves estimable or contemptible, amiable or detestable, worthy of reward or of punishment, happy or unhappy, accordingly as we conform to, or deviate from these rules. The law, which obliges man not to hurt himself, is founded upon the nature of a sensible being, who, in whatever way he came into this world, is forced by his actual essence to seek good and shun evil, to love pleasure and fear pain. The law, which obliges man not to injure, and even to do good to others, is founded upon the nature of sensible beings, living in society, whose essence compels them to despise those who are useless, and to detest those who oppose their felicity.
Whether there exists a God or not, whether this God has spoken or not, the moral duties of men will be always the same, so long as they are sensible beings. Have men then need of a God whom they know not, of an invisible legislator, of a mysterious religion and of chimerical fears, in order to learn that every excess evidently tends to destroy them, that to preserve health they must be temperate; that to gain the love of others it is necessary to do them good, that to do them evil is a sure means to incur their vengeance and hatred? "Before the law there was no sin." Nothing is more false than this maxim. It suffices that man is what he is, or that he is a sensible being, in order to distinguish what gives him pleasure or displeasure. It suffices that one man knows that another man is a sensible being like himself, to perceive what is useful or hurtful to him. It suffices that man needs his fellow-creature, in order to know that he must fear to excite sentiments unfavourable to himself. Thus the feeling and thinking being has only to feel and think, in order to discover what he must do for himself and others. I feel, and another feels like me; this is the foundation of all morals.
172.
We can judge of the goodness of a system of Morals, only by its conformity to the nature of man. By this comparison, we have a right to reject it, if contrary to the welfare of our species. Whoever has seriously meditated Religion; whoever has carefully weighed its advantages and disadvantages, will be fully convinced, that both are injurious to the interests of Man, or directly opposite to his nature.