One principle to keep?

If we had one single principle to keep...
It would be well spent on the basic principle to not lie. Through everything no matter what the consequences the truth should be told. One way or the other the truth will seek its way out into the reality, so why not just give off the reality in the first place? There's no reason to lie. It's a worthless sin that plenty of us commit. Whether it is to protect someone from any hurt or just for one's sake; lying should never be done. One lie leads to another and that is how the system for a simple lie occurs. It will always be way easier to give off the truth with anything than to keep living with guilt because of the knowledge that you know but never shared. Lying is basically like covering up a dead body. Although you will cover the dead corpse it will still remain there. And the guilt will be killing you slowly, but surely. It's better off if you decide not to kill anyone and allow them to live. Then you will not be accused of committing a crime. It's plain and simple; if an apocalyptic situation was to occur there would be no reason to lie. There's no one to protect now, it all just basically rebounds around the truth. You should be able to share the true reality of things with the other survivors, so there won't be a reason to hold anything against anyone.