Francis Crick Quote
To produce a really good biological theory one must try to see through the clutter produced by evolution to the basic mechanisms lying beneath them, realizing that they are likely to be overlaid by other, secondary mechanisms. What seems to physicists to be a hopelessly complicated process may have been what nature found simplest, because nature could only build on what was already there.
What Mad Pursuit: A Personal View of Scientific Discovery (ed. Basic Books, 1990) - ISBN: 9780465091386