The limits of science must be honestly admitted by the most committed scientist. Science does not make moral or aesthetic judgments, neither does it tell you how to use scientific knowledge nor does it address the supernatural. Extraordinary claims require extraordinary evidence, Carl Sagan once said. “For the invisible things of Him from the creation of the world are clearly seen, being understood by the things that are made, even His eternal power and Godhead; so that they are without excuse” (Romans 1:20 KJV).