Justice is the end of Government. It is the end of civil society. It ever has been, and ever will be pursued, until it be obtained, or until liberty … - James Madison

No man is allowed to be a judge in his own cause; because his interest would certainly bias his judgment, and, not improbably, corrupt his integrity. With equal, nay with greater reason, a body of men are unfit to be both judges and parties at the same time.

Those who are to conduct a war cannot in the nature of things, be proper or safe judges, whether a war ought to be commenced, continued, or concluded. Thy are barred from the latter functions by a great principle in free government, analogous to that which separates the sword from the purse, or the power of executing from the power of enacting laws.

Liberty may be endangered by the abuses of liberty as well as by the abuses of power.