Federalist 10, No man is allowed to be a judge in his own cause

Federalist 10, No man is allowed to be a judge in his own cause“No man is allowed to be a judge in his own cause, because his interest would certainly bias his judgment, and, not improbably, corrupt his integrity.

With equal, nay with greater reason, a body of men are unfit to be both judges and parties at the same time; yet what are many of the most important acts of legislation but so many judicial determinations, not indeed concerning the rights of single persons, but concerning the rights of large bodies of citizens?”

James Madison, , Federalist No. 10, “The Utility of the Union as a Safeguard Against Domestic Faction and Insurrection (continued),”  Daily Advertiser, November 22, 1787

Federalist 10 Full Text