Without the instruments and accumulated knowledge of the natural sciences... humans are trapped in a cognitive prison. They are like intelligent fish born in a deep shallowed pool. Wondering and restless, longing to reach out, they think about the world outside. They invent ingenious speculations and myths about the origin of the confining waters, of the sun and the sky and the stars above , and the meaning of their own existence. But they are wrong, always wrong because the world is too remote from ordinary experience to be merely imagined.

The most dangerous of devotions, in my opinion, is the one endemic to Christianity: I was not born to be of this world. With a second life waiting, suffering can be endured - especially in other people. The natural environment can be used up. Enemies of the faith can be savaged and suicidal martyrdom praised.

So important are insects and other land-dwelling arthropods that if all were to disappear, humanity probably could not last more than a few months.

To the extent that philosophical positions both confuse us and close doors to further inquiry, they are likely to be wrong.

The ideal scientist thinks like a poet and works like a bookkeeper

If everyone agreed to become vegetarian, leaving little or nothing for livestock, the present 1.4 billion hectares of arable land (3.5 billion acres) would support about 10 billion people.

Biology is a science of three dimensions. The first is the study of each species across all levels of biological organization, molecule to cell to organism to population to ecosystem. The second dimension is the diversity of all species in the biosphere. The third dimension is the history of each species in turn, comprising both its genetic evolution and the environmental change that drove the evolution. Biology, by growing in all three dimensions, is progressing toward unification and will continue to do so.