I turned to the teeming small creatures that can be held between the thumb and forefinger: the little things that compose the foundation of our ecosystems, the little things, as I like to say, who run the world.

One planet, one experiment.

For me, the peculiar qualities of faith are a logical outcome of this level of biological organization.

The two major challenges for the 21st century are to improve the economic situation of the majority and save as much of the planet as we can.

Destroying a tropical rainforest for profit is like burning all the paintings of the Louvre to cook dinner.

Karl Marx was right, socialism works, it is just that he had the wrong species

Go as far as you can, [young scientists]. The world needs you badly.