Books are generally written for that part of a nation whose circumstances, education, and sentiments, place them above the commission of crimes. This enlightened portion of society, which governs the other, reads and judges of writings; if they contain maxims false or injurious, they are soon either condemned to oblivion, or held up to public execration; if they contain only truth, they are not in danger. Fanatics and ignorant people are the disturbers of society. Sensible, enlightened, and disinterested persons are ever the friends of peace. You are not, Sir, of the number of pusillanimous thinkers, who believe that truth is capable of doing harm. It does harm to those only who deceive mankind, and to the rest of the human species it will always be useful. You ought long to have been convinced that the evils with which mankind are afflicted, arise only from our errors, our prejudices, our interests misunderstood, and the false ideas we attach to objects. In fine, it is easy to see that the policy and morality of man have been particularly corrupted by their religious prejudices. Was it not religious and supernatural ideas which caused sovereigns to be looked upon as gods? It is then religion which raised up tyrants and despots; tyrants and despots made wicked laws; their example corrupted the great, the great corrupted the lower classes of mankind; these vitiated beings became unhappy slaves, employed either in injuring themselves, flattering the great, or struggling to get clear of their misery. Kings were styled images of God: they were absolute like him they created justice and injustice; their wills often sanctified oppression, violence, and rapine. The means of obtaining their favours were vice and meanness. Thus nations became filled with perverted citizens, who, under leaders corrupted by religious notions, made continually a war, either open or clandestine, and were left destitute of any motive for practising virtue.