The weapons of physical warfare are also the symbols of man's hates or greeds, suspicions or fears. So far as the first of these negative emotions is concerned, Buddha neatly put the point: "Hatred ceaseth not by hatred; it ceaseth only by love." This lesson of two world wars must be extracted, and extracted quickly, if a third world war is to be avoided. And in the face of atomic extinction, the practice of nonviolent pacifism, which is the outer expression of love, is not mere sentimentality but the highest rationality and practicality.
-- Notebooks Category 11: The Negatives > Chapter 3: Their Presence in The World > # 455