Natural selection is a theory of local adaptation to changing environments. It proposes no perfecting principles, no guarantee of general improvement
Stephen Jay GouldFor Dawkins, evolution is a battle among genes, each seeking to make more copies of itself. Bodies are merely the places where genes aggregate for a time.
Stephen Jay GouldLife is short, and potential studies infinite. We have a much better chance of accomplishing something significant when we follow our passionate interests and work in areas of deepest personal meaning.
Stephen Jay GouldHistory does include aspects of directionality, and the present range of causes and phenomena does not exhaust the realm of past possibilities.
Stephen Jay GouldSpeciation does not necessarily promote evolutionary change; rather, speciation 'gathers in' and guards evolutionary change by locking and stabilization for sufficient geological time within a Darwinian individual of the appropriate scale. If a change in a local population does not gain such protection, it becomes-to borrow Dawkins's metaphor at a macroevolutionary scale-a transient duststorm in the desert of time, a passing cloud without borders, integrity, or even the capacity to act as a unit of selection, in the panorama of life's phylogeny.
Stephen Jay Gould