This is from the fourteen mindfulness trainings from Thich Nhat Hanh, also called Thay. You can see them and more related information on the Deer Park Monastery website.
http://www.deerparkmonastery.org/mindfulness-practice/the-fourteen-mindfulness-trainings or here: http://www.mindfulnessbell.org/14trainings.htm
The Twelfth Mindfulness Training: Reverence for Life
Aware that much suffering is caused by war and conflict, I am determined to cultivate non-violence, understanding and compassion in my daily life, to promote peace education, mindful mediation and reconciliation, within families, communities, nations and in the world. I am determined not to kill and not to let others kill. I will diligently practice deep looking with my Sangha to discover better ways to protect life and prevent war.
