Old beliefs die hard even when demonstrably false. - Edward O. Wilson

Although the capacity to become schizophrenic may well be within all of us, there is no question that certain persons have distinctive genes predisposing them to the condition.

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.

If history and science have taught us anything, it is that passion and desire are not the same as truth.