There are very obvious reasons, why these powers should be committed to separate departments in the state, and not be entrusted unitedly to one man, or body of men.
Different abilities are necessary for the making, judging, and executing of laws.
They require the exercise of different powers, faculties, and knowlege. No one man ever had a sufficient extent of abilities, or versatility of genius, to attend to the duties of all, at one time, or in a quick succession. Such a union must frequently occasion a confusion of principles, and remediless violation of rights. To commit their exercise to a single man, or body of men, essentially constitutes a monarchy, or aristocracy, for the time being. By giving them the power of avoiding all constitutional enquiry, it places them above a sense of accountability for their conduct.