The problem of conscientious objection to war is an extremely difficult one. Arjuna was taught in the Bhagavad Gita to fight and to do his duty in the defense of his people, but he was warned to fight impersonally, without anger and without hatred. Yet how few can be caught up in the passions of war or the dangers of war without feeling some antagonism towards those on the other side? It is an almost impossible ideal for most persons.
-- Notebooks Category 6: Emotions and Ethics > Chapter 7: Miscellaneous Ethical Issues > # 47