Death is the ultimate enemy - and I find nothing reproachable in those who rage mightily against the dying of the light.

Einstein's theory of gravitation replaced Newton's, but apples did not suspend themselves in mid-air, pending the outcome. And humans evolved from apelike ancestors whether they did so by Darwin's proposed mechanism or by some other yet to be discovered.

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

Precise adaptation, with each part finely honed to perform a definite function in an optimal way, can only lead to blind alleys, dead ends, and extinction.

The most erroneous stories are those we think we know best - and therefore never scrutinize or question.

Natural selection is a theory of local adaptation to changing environments. It proposes no perfecting principles, no guarantee of general improvement

The world is too complex for subsumption under any general theory of change.