It's the technique, I think, of writing a novel that is difficult for a nonfiction writer.

The love of complexity without reductionism makes art; the love of complexity with reductionism makes science.

I'm very much a Christian in ideals and ethics, especially in terms of belief in fairness, a deep set obligation to others, and the virtues of charity, tolerance and generosity that we associate with traditional Christian teaching.

The great paradox of determinism and free will, which has held the attention of the wisest of philosophers and psychologists for generations, can be phrased in more biological terms as follows: If our genes are inherited, and our environment is a train of physical events set in motion before we were born, how can there be a truly independent agent within the brain? The agent itself is created by the interaction of the genes and the environment. It would appear that our freedom is only a self delusion.

Destroying rainforest for economic gain is like burning a Renaissance painting to cook a meal.

Search until you find a passion and go all out to excel in its expression.

While ants exist in just the right numbers for the rest of the living world, humans have become too numerous. If we were to vanish today, the land environment would return to the fertile balance that existed before the human population explosion. Only a dozen or so species, among which are the crab louse and a mite that lives in the oil glands of our foreheads, depend on us entirely. But if ants were to disappear, tens of thousands of other plants and animal species would perish also, simplifying and weakening land ecosystems almost everywhere.