Earth is our home ... the largest living creature in our solar system. The land, the water, the air, and all the things that live on and in them form a gigantic community, an enormous cell. Here fungi, eagles, toads, worms, grasses, mosquitoes, ferns, people, dolphins, spiders, oak trees, and lions — up to ten million separately distinguishable forms of life or species — share Earth's environments. Whatever happens to one part, for good or ill, ultimately affects us all, the whole Earth: our home of abundant riches and indescribable beauty.
Our disenchantment of the night through artificial lighting may appear, if it is noticed at all, as a regrettable but eventually trivial side effect of contemporary life. That winter hour, though, up on the summit ridge with the stars falling plainly far above, it seemed to me that our estrangement from the dark was a great and serious loss. We are, as a species, finding it increasingly hard to imagine that we are part of something which is larger than our own capacity. We have come to accept a heresy of aloofness, a humanist belief in human difference, and we suppress wherever possible the checks and balances on us – the reminders that the world is greater than us or that we are contained within it.
