I am determined not to kill, not to let others kill, and not to condone any act of killing in the world, in my thinking, and in my way of life. We cannot support any act of killing; no killing can be justified. But not to kill is not enough ... If in your thinking you allow the killing to go on, you also break this precept. We must be determined not to condone killing, even in our minds.
Nhat HanhIf you have the insight of non-self, if you have the insight of impermanence, you should make that insight into a concentration that you keep alive throughout the day. Then what you say, what you think, and what you do will then be in the light of that wisdom and you will avoid making mistakes and creating suffering.
Nhat Hanh