When you have seen one ant, one bird, one tree, you have not seen them all.

Political ideology can corrupt the mind, and science.

In science, obsessiveness under psychological control can be a virtue.

The variety of genes on the planet in viruses exceeds, or is likely to exceed, that in all of the rest of life combined.

Ninety-nine percent of all species that ever lived are now extinct.

If you go from the USA - which, relative to the rest of the world, is in pretty good shape in terms of biodiversity and sustainability - to the tropics, everything gets worse. You have Indonesia, which is destroying its own forest. In West Africa there's no control whatsoever. It's a global situation. For that reason it ties in clearly with the needs and relationships of low-income countries.

Competing is intense among humans, and within a group, selfish individuals always win. But in contests between groups, groups of altruists always beat groups of selfish individuals.