When we wish to examine in a cool, calm way the opinions of men, we are very much surprised to find that in those which we consider the most essential, nothing is more rare than to find them using common sense; that is to say, the portion of judgment sufficient to know the most simple truths, to reject the most striking absurdities, and to be shocked by palpable contradictions. We have an example of this in Theology, a science revered in all times, in all countries, by the greatest number of mortals; an object considered the most important, the most useful, and the most indispensable to the happiness of society. If they would but take the trouble to sound the principles upon which this pretended science rests itself, they would be compelled to admit that the principles which were considered incontestable, are but hazardous suppositions, conceived in ignorance, propagated by enthusiasm or bad intention, adopted by timid credulity, preserved by habit, which never reasons, and revered solely because it is not comprehended. Some, says Montaigne, make the world believe that which they do not themselves believe; a greater number of others make themselves believe, not comprehending what it is to believe. In a word, whoever will consult common sense upon religious opinions, and will carry into this examination the attention given to objects of ordinary interest, will easily perceive that these opinions have no solid foundation; that all religion is but a castle in the air; that Theology is but ignorance of natural causes reduced to a system; that it is but a long tissue of chimeras and contradictions; that it presents to all the different nations of the earth only romances devoid of probability, of which the hero himself is made up of qualities impossible to reconcile, his name having the power to excite in all hearts respect and fear, is found to be but a vague word, which men continually utter, being able to attach to it only such ideas or qualities as are belied by the facts, or which evidently contradict each other. The notion of this imaginary being, or rather the word by which we designate him, would be of no consequence did it not cause ravages without number upon the earth. Born into the opinion that this phantom is for them a very interesting reality, men, instead of wisely concluding from its incomprehensibility that they are exempt from thinking of it, on the contrary, conclude that they can not occupy themselves enough about it, that they must meditate upon it without ceasing, reason without end, and never lose sight of it. The invincible ignorance in which they are kept in this respect, far from discouraging them, does but excite their curiosity; instead of putting them on guard against their imagination, this ignorance makes them positive, dogmatic, imperious, and causes them to quarrel with all those who oppose doubts to the reveries which their brains have brought forth. What perplexity, when we attempt to solve an unsolvable problem! Anxious meditations upon an object impossible to grasp, and which, however, is supposed to be very important to him, can but put a man into bad humor, and produce in his brain dangerous transports. When interest, vanity, and ambition are joined to such a morose disposition, society necessarily becomes troubled. This is why so many nations have often become the theaters of extravagances caused by nonsensical visionists, who, publishing their shallow speculations for the eternal truth, have kindled the enthusiasm of princes and of people, and have prepared them for opinions which they represented as essential to the glory of divinity and to the happiness of empires. We have seen, a thousand times, in all parts of our globe, infuriated fanatics slaughtering each other, lighting the funeral piles, committing without scruple, as a matter of duty, the greatest crimes.