Pictures are not incidental frills to a text; they are essences of our distinctive way of knowing.

History employs evolution to structure biological events in time.

The most important scientific revolutions all include, as their only common feature, the dethronement of human arrogance from one pedestal after another of previous convictions about our centrality in the cosmos.

The proof of evolution lies in those adaptations that arise from improbable foundations.

People talk about human intelligence as the greatest adaptation in the history of the planet. It is an amazing and marvelous thing, but in evolutionary terms, it is as likely to do us in as to help us along.

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.

But we all recognise the primary foible of frail humanity - our propensity for embracing hope and shunning logic, our tendency to believe what we desire rather than what we observe.