I just tracked down a quote from Arthur C. Clarke that my observation on fish reminded me of. It may not be a "favorite quote" but it should be:
"We cannot predict the new forces, powers, and discoveries that will be disclosed to us when we reach the other planets and set up new laboratories in space. They are as much beyond our vision today as fire or electricity would be beyond the imagination of a fish."
(Well, there are electric eels, but sure.)