Facts do not 'speak for themselves'; they are read in the light of theory.

The center of human nature is rooted in ten thousand ordinary acts of kindness that define our days.

The history of life is more adequately represented by a picture of 'punctuated equilibria' than by the notion of phyletic gradualism. The history of evolution is not one of stately unfolding, but a story of homeostatic equilibria, disturbed only 'rarely' (i.e. rather often in the fullness of time) by rapid and episodic events of speciation.

The dogmatist within is always worse than the enemy without.

Humans are not the end result of predictable evolutionary progress, but rather a fortuitous cosmic afterthought, a tiny little twig on the enormously arborescent bush of life, which if replanted from seed, would almost surely not grow this twig again.

A lot of scientists hate writing. Most scientists love being in the lab and doing the work and when the work is done, they are finished.

Life began three and a half billion years ago, necessarily about as simple as it could be, because life arose spontaneously from the organic compounds in the primeval oceans.