Enlightenment comes from within. The entire universe can be found within ourselves and our hearts. We are limitless. We are immortal souls. Only when we return to the original source of god will we “die” and even then we won’t really die. We will just return to something greater. Death is mearly a transition. It makes people sad because they think their loosing something separate from them, but in reality they are gaining a piece of that person or animal. If we are all one, and death is just our soul rejoining the universe, then the soul that left the body is rejoining ourselves. We will always have that person or animal within ourselves because we are all God.