By a faction, I understand a number of citizens, whether amounting to a majority or a minority of the whole, who are united and actuated by some common impulse of passion, or of interest, adversed to the rights of other citizens, or to the permanent and aggregate interests of the community.

Madison, James. "No. 47: Complete separation of powers not required.--Madison." The Federalist: A Commentary on the Constitution of the United States, edited by Robert Scigliano. The Modern Library, 2001.

Rousseau, Jean-Jacques. Confessions, translated by Angela Scholar. Oxford University Press, 2008, pt. 1, bk. 5.

Hamilton, Alexander. "No. 15: Its great defect: can only legislate for states.--Hamilton." The Federalist: A Commentary on the Constitution of the United States, edited by Robert Scigliano. The Modern Library, 2001.