The rules followed are tight enough to produce a broad overlap in the decisions taken by all individuals and hence a convergence powerful enough to b… - Edward O. Wilson

The essence of humanity's spiritual dilemma is that we evolved genetically to accept one truth and discovered another.

If we were to vanish today, the land environment would return to the fertile balance that existed before the human population explosion. Only a dozen or so species, among which are the crab louse and a mite that lives in the oil glands of our foreheads, depend on us entirely. But if ants were to disappear, tens of thousands of other plant and animal species would perish also, simplifying and weakening land ecosystems almost everywhere.

Piaget, who was originally trained as a biologist, views intellectual development as an interaction of an inherited genetic program with the environment. It is no coincidence that he calls this conception "genetic epistemology," in effect the study of the hereditary unfolding of understanding.