Few tragedies can be more extensive than the stunting of life, few injustices deeper than the denial of an opportunity to strive or even to hope, by a limit imposed from without, but falsely identified as lying within.

People may believe correct things for the damndest and weirdest of wrong reasons.

Nothing is more dangerous than a dogmatic worldview.

Skepticism is the agent of reason against organized irrationalism--and is therefore one of the keys to human social and civic decency.

Recapitulation provided a convenient focus for the persuasive racism of white scientists; they looked to the activities of their own children for comparison with normal adult behavior in lower races.

Some evolutionists will protest that we are caricaturing their view of adaptation. After all, do they not admit genetic drift, allometry, and a variety of reasons for nonadaptive evolution?

Biological determinism is, in its essence, a theory of limits. It takes the current status of groups as a measure of where they should and must be ... We inhabit a world of human differences and predilections, but the extrapolation of these facts to theories of rigid limits is ideology.