On Enumerated Powers

"In the first place, it is to be remembered, that the general government is not to be charged with the whole power of making and administering laws: its jurisdiction is limited to certain enumerated objects, which concern all the members of the republic, but which are not to be attained by the separate provisions of any."

-- James Madison (Federalist No. 14, 30 November 1787)

Reference: Madison, Federalist No. 14