THE MANTRA. “Biology’s First Law: The Tendency for Diversity and Complexity to Increase in Evolutionary Systems. “In any evolutionary system in which there is variation and heredity, there is, in the absence of constraint, a tendency for diversity and complexity to increase.”
http://ndpr.nd.edu/news/24573-biology-s-first-law-the-tendency-for-diversity-and-complexity-to-increase-in-evolutionary-systems/