"Each department is truly independent of the others, and has an equal right to decide for itself what is the meaning of the constitution in the cases submitted to its action...."
Thomas Jefferson
"Nothing has yet been offered to invalidate the doctrine that the meaning of the Constitution may as well be ascertained by the Legislative as by the Judicial authority."
James Madison
“No political truth is certainly of greater intrinsic value, or is stamped with the authority of more enlightened patrons of liberty, than that on which the objection is founded. The accumulation of all powers, legislative, executive, and judiciary, in the same hands, whether of one, a few, or many, and whether hereditary, self appointed, or elective, may justly be pronounced the very definition of tyranny. Were the federal Constitution, therefore, really chargeable with the accumulation of power, or with a mixture of powers, having a dangerous tendency to such an accumulation, no further arguments would be necessary to inspire a universal reprobation of the system. I persuade myself, however, that it will be made apparent to everyone that the charge cannot be supported, and that the maxim on which it relies has been totally misconceived and misapplied. In order to form correct ideas on this important subject, it will be proper to investigate the sense in which the preservation of liberty requires that the three great departments of power should be separate and distinct.”
Federalist #47 [James Madison]