A principle to keep

In the event of an apocalypse, I think it would be best for everyone to still have some sense of being civil, and retain any sanity left. It is best to not resort to uncivilized way of doing things, which is basically any laws you were taught at a young age, like to stay level headed, act in an orderly fashion and to not harm those who haven't done wrong. It may also let them act in an orderly fashion, and in turn make level-headed decisions that may risk harming others or themselves.