"Matter flows from place to place, and momentarily comes together to be you. Some people find that thought disturbing; I find the reality thrilling.
Richard DawkinsTextbooks describe DNA as a blueprint for a body. It's better seen as a recipe for making a body, because it is irreversible. But today I want to present it as something different again, and even more intriguing. The DNA in you is a coded description of ancient worlds in which your ancestors lived. DNA is the wisdom out of the old days, and I mean very old days indeed.
Richard Dawkins