The argument, drawn from the courts of law, applying the principles of law to new cases as they emerge, is altogether frivolous, inapplicable, and arises from a total ignorance of the bounds between civil and criminal jurisdiction, and of the separate maxims that govern these two provinces of law, that are eternally separate. Undoubtedly the courts of law, where a new case comes before them, as they do every hour, then, that there may be no defect in justice, call in similar principles, and the example of the nearest determination, and do everything to draw the law to as near a conformity to general equity and right reason as they can bring it with its being a fixed principle. _Boni judicis est ampliare justitiam_--that is, to make open and liberal justice. But in criminal matters this parity of reason, and these analogies, ever have been, and ever ought to be, shunned. Whatever is incident to a court of judicature, is necessary to the House of Commons, as judging in elections. But a power of making incapacities is not necessary to a court of judicature; therefore a power of making incapacities is not necessary to the House of Commons. Incapacity, declared by whatever authority, stands upon two principles: first, an incapacity arising from the supposed incongruity of two duties in the commonwealth; secondly, an incapacity arising from unfitness by infirmity of nature, or the criminality of conduct. As to the first class of incapacities, they have no hardship annexed to them. The persons so incapacitated are paid by one dignity for what they abandon in another, and, for the most part, the situation arises from their own choice. But as to the second, arising from an unfitness not fixed by nature, but superinduced by some positive acts, or arising from honourable motives, such as an occasional personal disability, of all things it ought to be defined by the fixed rule of law--what Lord Coke calls the Golden Metwand of the Law, and not by the crooked cord of discretion. Whatever is general is better born. We take our common lot with men of the same description. But to be selected and marked out by a particular brand of unworthiness among our fellow-citizens, is a lot of all others the hardest to be borne: and consequently is of all others that act which ought only to be trusted to the legislature, as not only legislative in its nature, but of all parts of legislature the most odious. The question is over, if this is shown not to be a legislative act. But what is very usual and natural, is to corrupt judicature into legislature. On this point it is proper to inquire whether a court of judicature, which decides without appeal, has it as a necessary incident of such judicature, that whatever it decides _de jure_ is law. Nobody will, I hope, assert this, because the direct consequence would be the entire extinction of the difference between true and false judgments.