Peace is not an absence of war, it is a virtue, a state of mind, a disposition for benevolence, confidence, justice
It isn't enough to talk about peace. One must believe in it. And it isn't enough to believe in it. One must work at it.
He who lives in harmony with himself lives in harmony with the world.
One day we must come to see that peace is not merely a distant goal we seek, but that it is a means by which we arrive at that goal. We must pursue peaceful ends through peaceful means.
Try to leave this world a little better than you found it and, when your turn comes to die, you can die happy in feeling that at any rate you have not wasted your time but have done your best.