" This death-and-life mystery, this mechanism, this process is built into the very fabric of creation. The cells in our bodies are dying at a rate of millions a second, only to be replaced at a similar rate of millions a second. Our skin is constantly flaking off and our body is continually replacing the skin cells with new ones; we have entirely new skin every week or so. "

― Rob Bell , Love Wins: A Book About Heaven, Hell, and the Fate of Every Person Who Ever Lived