It is easier to fight for one's principles than to live up to them.
Alfred Adler

Peace is the work of justice indirectly, in so far as justice removes the obstacles to peace; but it is the work of charity (love) directly, since charity… causes peace.
Thomas Aquinas

We have grasped the mystery of the atom and rejected the Sermon on the Mount. Ours is a world of nuclear giants and ethical infants. We know more about war than we know about peace, more about killing that we know about living.
General Omar Bradley

We used to wonder where war lived, what it was that made it so vile. And now we realize that we know where it lives, that it is inside ourselves.
Albert Camus

The non-violent technique does not depend for its success on the goodwill of the oppressor, but rather on the unfailing assistance of God.
César Chávez

There is no squabbling so violent as that between people who accepted an idea yesterday and those who will accept the same idea tomorrow.
Christopher Morley