Aragorn vs. Saruman

Aragorn the Libertarian King: “[O]nly of your free will would I have you come, for you will find both toil and greater fear, and maybe worse.” And a little later: “for I go on a path appointed. But those who follow me do so of their free will; and if they wish now to remain and ride with the Rohirrim, they may do so. But I shall take the Paths of the Dead, alone, if needs be.” (“Passing of the Grey Company”)

Saruman, Keeper of the Common Good: “[O]ur time is at hand: the world of Men, which we must rule. But we must have power, power to order all things as we will, for that good which only the Wise can see.” (“Council of Elrond”)

Saruman’s philosophy of war

Saruman to Éomer: “To every man his part. Valour in arms is yours, and you win high honour thereby. Slay whom your lord names as enemies, and be content. Meddle not in policies which you do not understand.”  –“The Voice of Saruman,” Two Towers