A man of reflection cannot be incapable of his duties, of discovering the relations subsisting between men, of meditating his own nature, of discerning his own wants, propensities, and desires, and of perceiving what he owes to beings, who are necessary to his happiness. These reflections naturally lead him to a knowledge of the Morality most essential to social beings. Dangerous passions seldom fall to the lot of a man who loves to commune with himself, to study, and to investigate the principles of things. The strongest passion of such a man will be to know truth, and his ambition to teach it to others. Philosophy cultivates the mind. On the score of morals and honesty, has not he who reflects and reasons, evidently an advantage over him, who makes it a principle never to reason? If ignorance is useful to priests, and to the oppressors of mankind, it is fatal to society. Man, void of knowledge, does not enjoy reason; without reason and knowledge, he is a savage, liable to commit crimes. Morality, or the science of duties, is acquired only by the study of Man, and of what is relative to Man. He, who does not reflect, is unacquainted with true Morality, and walks with precarious steps, in the path of virtue. The less men reason, the more wicked they are. Savages, princes, nobles, and the dregs of the people, are commonly the worst of men, because they reason the least. The devout man seldom reflects, and rarely reasons. He fears all enquiry, scrupulously follows authority, and often, through an error of conscience, makes it a sacred duty to commit evil. The Atheist reasons: he consults experience, which he prefers to prejudice. If he reasons justly, his conscience is enlightened; he finds more real motives to do good than the bigot whose only motives are his fallacies, and who never listens to reason. Are not the motives of the Atheist sufficiently powerful to counteract his passions? Is he blind enough to be unmindful of his true interest, which ought to restrain him? But he will be neither worse nor better, than the numerous believers, who, notwithstanding Religion and its sublime precepts, follow a conduct which Religion condemns. Is a credulous assassin less to be feared, than an assassin who believes nothing? Is a very devout tyrant less tyrannical than an undevout tyrant? 181. Nothing is more uncommon, than to see men consistent. Their opinions never influence their conduct except when conformable to their temperaments, passions, and interests. Daily experience shows, that religious opinions produce much evil and little good. They are hurtful, because they often favour the passions of tyrants, of ambitious men, of fanatics, and of priests; they are of no effect, because incapable of counter-balancing the present interests of the greater part of mankind. Religious principles are of no avail, when they act in opposition to ardent desires; though not unbelievers, men then conduct themselves as if they believed nothing.