The essence of nonviolence, the lack of any impulse to harm, lies in the peace passing understanding at the heart of all of us and of every religious tradition. From that place ensues trust in the unfolding process of life, at the same time as action to the greater good. It is the source of action because compassion naturally arises from wisdom and wisdom is the nature of that place. Compassion is being moved, literally, to act for the greater good.
Look at this window: it is nothing but a hole in the wall, but because of it the whole room is full of light. So when the faculties are empty, the heart is full of light. Being full of light it becomes an influence by which others are secretly transformed.