Keith Heyer Meldahl said this quote

“ We live and we die, but we are made of sterner stuff. The carbon atoms in our fingernails, the calcium in our bones, the iron atoms in our blood -- all the countless trillions of atoms of which we are made -- are ancient objects. They existed before us, before the Earth itself, in fact. And after each of us dies, they will depart from our bodies and do other things. Forever. ”