Having mistaken himself, he has remained ignorant of the indispensable affinity that subsists between him, and the beings of his own species: having mistaken his duty to himself, it consequently follows, he has mistaken his duty to others. He made a calculation in error of what his happiness required; he did not perceive, what he owed to himself, the excesses he ought to avoid, the desires he ought to resist, the impulses he ought to follow, in order to consolidate his felicity, to promote his comfort, and to further his advantage. In short, he was ignorant of his true interests; hence his irregularities, his excesses, his shameful extravagance, with that long train of vices, to which he has abandoned himself, at the expense of his preservation, at the hazard of his permanent prosperity. It is, therefore, ignorance of himself that has hindered man from enlightening his morals. The corrupt authorities to which he had submitted, felt an interest in obstructing the practice of his duties, even when he knew them. Time, with the influence of ignorance, aided by his corruption, gave them a strength not to be resisted by his enfeebled voice. His duties continued unperformed, and he fell into contempt both with himself and with others. The ignorance of Man has endured so long, he has taken such slow, such irresolute steps to ameliorate his condition, only because he has neglected to study Nature, to scrutinize her laws, to search out her expedients, to discover her properties, that his sluggishness finds its account, in permitting himself to be guided by example, rather than to follow experience, which demands activity; to be led by routine, rather than by his reason, which enjoins reflection; to take that for truth upon the authority of others, which would require a diligent and patient investigation. From hence may be traced the hatred man betrays for every thing that deviates from those rules to which he has been accustomed; hence his stupid, his scrupulous respect for antiquity, for the most silly, the most absurd and ridiculous institutions of his fathers: hence those fears that seize him, when the most beneficial changes are proposed to him, or the most likely attempts are made to better his condition. He dreads to examine, because he has been taught to hold it irreverent of something immediately connected with his welfare; his credulity suffers him to believe the interested advice, and spurns at those who wish to show him the danger of the road he is travelling. This is the reason why nations linger on in the most shameful lethargy, suffering under abuses handed down from century to century, trembling at the very idea of that which alone can repair their calamities.