“And you are made of a hundred trillion cells. We are, each of us, a multitude.”
― Carl Sagan, Cosmos

“But there is nothing in biology yet found that indicates the inevitability of death.”
― Richard P. Feynman

“If we are merely matter intricately assembled, is this really demeaning? If there’s nothing here but atoms, does that make us less or does that make matter more?”
― Carl Sagan, The Varieties of Scientific Experience: A Personal View of the Search for God

“We are biology. We are reminded of this at the beginning and the end, at birth and at death. In between we do what we can to forget.”
― Mary Roach, Stiff: The Curious Lives of Human Cadavers

“When you look more generally at life on Earth, you find that it is all the same kind of life. There are not many different kinds; there’s only one kind. It uses about fifty fundamental biological building blocks, organic molecules.”
― Carl Sagan, The Varieties of Scientific Experience: A Personal View of the Search for God