The evolutionary drive towards complexity comes, in those lineages where it comes at all, not from any inherent propensity for increased complexity, and not from biased mutation. It comes from natural selection: the process which, as far as we know, is the only process ultimately capable of generating complexity out of simplicity.
From the Book The God Delusion, 2006, ISBN 0618680004
Copyright © 2006 by Richard Dawkins
No. 76