Similar observations apply to the uniformity of moral distinctions, or the conviction of a certain line of conduct which man owes to his fellow-men. There have been many controversies and various contending systems in reference to this subject, but I submit that the question may be disposed of in the same manner as the one now mentioned. Certain fixed and defined principles of relative duty appear to be recognised by the consent of mankind, as an essential part of their moral constitution, by as absolute a conviction as that by which are recognised our bodily qualities. The hardened criminal, whose life has been a course of injustice and fraud, when at length brought into circumstances which expose him to the knowledge or the retribution of his fellow-men, expects from them veracity and justice, or perhaps even throws himself upon their mercy. He thus recognises such principles as a part of the moral constitution, just as the blind man, when he has missed his way, asks direction of the first person he meets,--presuming upon the latter possessing a sense which, though lost to him, he still considers as belonging to every sound man. In defending himself, also, the criminal shews the same recognition. For, his object is to disprove the alleged facts, or to frame excuses for his conduct;--he never attempts to question those universal principles by which he feels that his actions must be condemned, if the facts are proved against him. Without such principles, indeed, thus universally recognised, it is evident that the whole system of human things would go into confusion and ruin. Human laws may restrain or punish gross acts of violence and injustice; but they can never provide for numberless methods by which a man may injure his neighbour, or promote his own interest at the expense of others. There are, in fact, but a very few cases which can be provided for by any human institution; it is a principle within that regulates the whole moral economy. In its extent and importance, when compared with all the devices of man, it may be likened to those great principles which guide the movements of the universe, contrasted with the contrivances by which men produce particular results for their own convenience; and one might as well expect to move a planet by machinery, or propel a comet by the power of steam, as to preserve the semblance of order in the moral world, without those fundamental principles of rectitude which form a part of the original constitution of every rational being.