All systems, either of preference or of restraint, therefore, being thus completely taken away, the obvious and simple system of natural liberty establishes itself of its own accord. Every man, as long as he does not violate the laws of justice, is left perfectly free to pursue his own interest his own way, and to bring both his industry and capital into competition with those of any other man, or order of men.

Adams, John. "Novanglus No. VII, March 6, 1775." John Adams: Revolutionary Writings 1755-1775, edited by Gordon S. Wood. Library of America, 2011.

Madison, James. "No. 51: How to maintain: make the parts check each other. Also, a federal system divides power further.--Madison (or Hamilton)." The Federalist: A Commentary on the Constitution of the United States, edited by Robert Scigliano. The Modern Library, 2001.

Paine, Thomas. "Common Sense." Rights of Man, Common Sense, and Other Political Writings, edited by Mark Philp. Oxford University Press, 2009, sect. 4.