"Of all known forms of life, only about ten percent are still living today. All other forms – fantastic plants, ordinary plants, living animals with unimaginably various wings, tails, teeth, brains – are utterly and forever gone. That is a great many forms that have been created. Multiplying ten times the number of living forms today yields a profusion that is quite beyond what I consider thinkable. Why so many forms? Why not just that one hydrogen atom? The creator goes off on one wild, specific tangent after another, or millions simultaneously, with an exuberance that would seem to be unwarranted, and with an abandoned energy sprung from an unfathomable font. What is going on here?"
Pilgrim At Tinker Creek