The operations of the federal government will be most extensive and important in times of war and danger; those of the State governments, in times of… - James Madison

It may be a reflection on human nature, that such devices should be necessary to control the abuses of government. But what is government itself, but the greatest of all reflections on human nature? If men were angels, no government would be necessary. If angels were to govern men, neither external nor internal controls on government would be necessary. In framing a government which is to be administered by men over men, the great difficulty lies in this: you must first enable the government to control the governed; and in the next place oblige it to control itself.

If Congress can do whatever in their discretion can be done by money, and will promote the general welfare, the Government is no longer a limited one possessing enumerated powers, but an indefinite one subject to particular exceptions. It is to be remarked that the phrase out of which this doctrine is elaborated, is copied from the old articles of Confederation, where it was always understood as nothing more than a general caption to the specified powers, and it is a fact that it was preferred in the new instrument for that very reason as less liable than any other to misconstruction.

If Congress can apply money indefinitely to the general welfare, and are the sole and supreme judges of the general welfare, they may take the care of religion into their own hands; they may establish teachers in every State, county, and parish, and pay them out of the public Treasury; they may take into their own hands the education of children, establishing in like manner schools throughout the Union; they may undertake the regulation of all roads other than post roads. In short, every thing, from the highest object of State legislation, down to the most minute object of police, would be thrown under the power of Congress; for every object I have mentioned would admit the application of money, and might be called, if Congress pleased, provisions for the general welfare.