Alexander Hamilton, speech to the New York Ratifying Convention, 1788

"This balance between the National and State governments ought to be dwelt on with peculiar attention, as it is of the utmost importance. It forms a double security to the people. If one encroaches on their rights they will find a powerful protection in the other. Indeed, they will both be prevented from overpassing their constitutional limits by a certain rivalship, which will ever subsist between them."