John Green said this quote

“ I thought at first that she was just dead. Just darkness...I thought about the slow process of becoming bone and then fossil and then coal that will, in millions of years, be mined by humans of the future, and how they would heat their homes with her and then she would be smoke billowing out of a smokestack, coating the atmosphere. I still that think that, sometimes, maybe the afterlife is just something we made up to ease the pain of loss, to make our time in the labyrinth bearable. But ultimately I do not believe that she was only matter...I believe now that we are greater than the sum of our parts. If you take her genetic code and you add her life experiences and the relationships she had with people, and then you take the size and shape of her body, you do not get her. There is something else there entirely. There is a part of her greater than the sum of her knowable parts. And that part has to go somewhere, because it cannot be destroyed...energy is never created and never destroyed. We cannot be born and cannot die. Like all energy, we can only change shapes and sizes and manifestations... Thomas Edison's last words were: It's very beautiful over there. I don't know where there is, but I believe it's somewhere, and I hope it's beautiful. ”