Peace is not merely the absence of violence, but the presence of justice.

I heard this in Ghost In the Shell. From my research, it’s a derivative of a quote by Dr. Martin Luther King, Jr.

True peace is not merely the absence of tension: it is the presence of justice.

This is how I judge when someone calls for peace. Will there be real peace, or merely a cessation of conflict? One of those lessons learned by studying history is that a peace without justice inevitably leads back to war, and usually a more bitter war.