“Landing on the moon is in the same category as putting the first man in space or the first person climbing Mt. Everest—it’s a great achievement for mankind. But if the first ocean animal to touch dry land simply lay there for a minute before being washed back into the ocean, it would not qualify as a giant leap for life, and the moon landing shouldn’t either. It’s only when certain mutated fish began to live on land in a sustainable way that life as a whole made a giant leap. It’s colonizing Mars permanently that will be a giant leap for mankind.”