“Of all the things I am not very good at, living in the real world is perhaps the most outstanding.”

“You may not feel outstandingly robust, but if you are an average-sized adult you will contain within your modest frame no less than 7 X 10^18 joules of potential energy—enough to explode with the force of thirty very large hydrogen bombs, assuming you knew how to liberate it and really wished to make a point. Everything has this kind of energy trapped within it. We're just not very good at getting it out. Even a uranium bomb—the most energetic thing we have produced yet—releases less than 1 percent of the energy it could release if only we were more cunning.”

“Most of what has lived on Earth has left behind no record at all.”

“As the saying goes, it takes all kinds to make the world go around, though perhaps some shouldn't go quite so far around it as others.”

“At the foot of the mountain, the park ended and suddenly all was squalor again. I was once more struck by this strange compartmentalization that goes on in America -- a belief that no commercial activities must be allowed inside the park, but permitting unrestrained development outside, even though the landscape there may be just as outstanding. America has never quite grasped that you can live in a place without making it ugly, that beauty doesn't have to be confined behind fences, as if a national park were a sort of zoo for nature.”

“But the thing is, most of the time bad things don't happen. Rocks don't fall. Earthquakes don't occur. New vents don't suddenly open up. For all the instability, it's mostly remarkably and amazingly tranquil.”

“[Australia] is the home of the largest living thing on earth, the Great Barrier Reef, and of the largest monolith, Ayers Rock (or Uluru to use its now-official, more respectful Aboriginal name). It has more things that will kill you than anywhere else. Of the world's ten most poisonous snakes, all are Australian. Five of its creatures - the funnel web spider, box jellyfish, blue-ringed octopus, paralysis tick, and stonefish - are the most lethal of their type in the world. This is a country where even the fluffiest of caterpillars can lay you out with a toxic nip, where seashells will not just sting you but actually sometimes go for you. ... If you are not stung or pronged to death in some unexpected manner, you may be fatally chomped by sharks or crocodiles, or carried helplessly out to sea by irresistible currents, or left to stagger to an unhappy death in the baking outback. It's a tough place.”