Answer:
The Golden Rule
Explanation:
The Golden Rule is a rule followed by most of the religions of the world and also accepted by people with no religious beliefs, this means "Do onto others what you´d like them to do onto you", this is a very interesting way to live life, since it gives you a clear path to etich and moral decisions in your life, prior to doing something you just have to ask yourself, Would I like it if someone do this to me?