Philosophy is essentially realizable hence practical. It uses the idea of nonviolence only under the governance of wisdom. If violent punishment or causing pain will be better in the end than refraining, it will not hesitate. They have their place. But because philosophy combines and balances its wisdom with compassion, with mercy and, if advisable, forgiveness, its violence operates side by side with nonviolence.
-- Notebooks Category 6: Emotions and Ethics > Chapter 7: Miscellaneous Ethical Issues > # 27