If we are at war with our parents, our family, our society, or our church, there is probably a war going on inside us also, so the most basic work for peace is to return to ourselves and create harmony among the elements within us - our feelings, our perceptions, and our mental states. That is why the practice of meditation, looking deeply, is so important.
Thich Nhat Hanh (2007). “Living Buddha, Living Christ 10th Anniversary Edition”, p.10, Penguin