Peace has always been among humanity's highest values--for some, supreme. Consider: "Peace at any price."1 "The most disadvantageous peace is better than the most just war."2 "Peace is more important than all justice."3 "I prefer the most unjust peace to the justest war that was ever waged."4 "There never was a good war or a bad peace."5Yet, we agree little on what is peace. Perhaps the most popular (Western) view is as an absence of dissension, violence, or war, a meaning found in the New Testament and possibly an original meaning of the Greek word for peace, Irene. Pacifists have adopted this interpretation, for to them all violence is bad. This meaning is widely accepted among irenologists6 and students of international relations. It is the primary dictionary definition.Peace, however, is also seen as concord, or harmony and tranquility. It is viewed as peace of mind or serenity, especially in the East. It is defined as a state of law or civil government, a state of justice or goodness, a balance or equilibrium of Powers.Such meanings of peace function at different levels. Peace may be opposed to or an opposite of antagonistic conflict, violence, or war. It may refer to an internal state (of mind or of nations) or to external relations. Or it may be narrow in conception, referring to specific relations in a particular situation (like a peace treaty), or overarching, covering a whole society (as in a world peace). Peace may be a dichotomy (it exists or it does not) or continuous, passive or active, empirical or abstract, descriptive or normative, or positive or negative.