The germ of dissolution of our federal government is in the constituion of the federal judiciary; an irresponsible body, (for impeachment is scarcely a scare-crow) working like gravity by night and by day, gaining a little today and a little tomorrow, and advancing its noiseless step like a thief, over the field of jurisdiction, until all shall be usurped from the States, and the government of all be consolidated into one. Thomas Jefferson
Refusing or not refusing to execute a law to stamp it with its final character...makes the Judiciary department paramount in fact to the Legislature, which was never intended and can never be proper. James Madison
[T]he opinion which gives to the judges the right to decide what laws are constitutional and what not, not only for themselves, in their, own sphere of action, but for the Legislature and Executive also in their spheres, would make the Judiciary a despotic branch. Thomas Jefferson
The Constitution...is a mere thing of wax in the hands of the judiciary which they may twist and shape into any form they please. Thomas Jefferson
A judiciary independent of a king or executive alone, is a good thing; but independence of the will of the nation is a solecism, at least in a republican government. Thomas Jefferson
So if a law be in opposition to the constitution; if both the law and the constitution apply to a particular case, so that the court must either decide that case conformably to the law, disregarding the constitution; or conformably to the constitution, disregarding the law; the court must determine which of these conflicting rules governs the case. This is of the very essence of judicial duty." -- Chief Justice John Marshall, 1803