“In a designed economy there would be no trees, or certainly no very tall trees: no forests, no canopy. Trees are a waste. Trees are extravagant. Tree trunks are standing monuments to futile competition - futile if we think in terms of a planed economy. But the natural economy is not planned. Individual plants compete with other plants, of the same and other species, and the result is that they grow taller and taller, far taller than any planner would recommend.”

“A tree looks a lot taller in the desert than it does in the forest.”

“During climbs into taller trees, I was occasionally able to look down on the backs of birds, which shine with reflected sunlight as they move through the green depths of the canopy, like schools of fish.”

“The forest has been growing for hundreds of years. Each time a child is born, a tree is planted. You could see from his tree how old a person was. The tall and thick tree trunks, which gave the most shade, belonged to people who had already returned to the spirit world. But the trees of the living and the dead stood in the same grove, sought their nourishment from the same soil and the same rain. They stood there waiting for the children that were not yet born, the trees that had not yet been planted. In that way the forest would grow, and the age of the village would be visible for all time. No one could tell from a tree whether someone was dead, only that he had been born.”

“Different sorts of survival machine appear very varied on the outside and in their internal organs. An octopus is nothing like a mouse, and both are quite different from an oak tree. Yet in their fundamental chemistry they are rather uniform, and, in particular, the replicators that they bear, the genes, are basically the same kind of molecule in all of us—from bacteria to elephants. We are all survival machines for the same kind of replicator—molecules called DNA— but there are many different ways of making a living in the world, and the replicators have built a vast range of machines to exploit them. A monkey is a machine that preserves genes up trees, a fish is a machine that preserves genes in the water; there is even a small worm that preserves genes in German beer mats. DNA works in mysterious ways.”

“Today I have grown taller from walking with the trees.”

“Why would an all-powerful creator decide to plant his carefully crafted species on islands and continents in exactly the appropriate pattern to suggest, irresistibly, that they had evolved and dispersed from the site of their evolution?”