“A significant fraction of thru-hikers reach Katahdin, then turn around and start back to Georgia. They just can't stop walking, which kind of makes you wonder.”

“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.”

“The real significance of Magellan's voyage was not that it was the first to circumnavigate the planet, but that it was the first to realize just how big that planet was.”

“Is that dog shit on the bottom of your shoe?’I sat up a fraction. ‘What?’‘Is that dog shit on the bottom of your shoe?’‘I don’t know, the lab report’s not back yet,’ I replied drily.‘I’m serious, is that dog shit?’‘How should I know?’Katz leaned far enough forward to give it a good look and a cautious sniff. ‘It is dog shit,’ he announced with an odd tone of satisfaction.‘Well, keep quiet about it or everybody’ll want some.’‘Go and clean it off, will ya? It’s making me nauseous.’And here the bickering started, in intense little whispers.‘You go and clean it off.’‘It’s your shoes.’‘Well, I kind of like it. Besides, it kills the smell of this guy next to me.’‘Well, it’s making me nauseous.’‘Well, I don’t give a shit.’‘Well, I think you’re a fuck-head.’‘Oh, you do, do you?’‘Yes, as a matter of fact. You’ve been a fuck-head since Austria.’‘Well, you’ve been a fuck-head since birth.’‘Me?’ A wounded look. ‘That’s rich. You were a fuck-head in the womb, Bryson. You’ve got three kinds of chromosomes: X, Y and fuck-head.”

“I can't think of anything that excites a greater sense of childlike wonder than to be in a country where you are ignorant of almost everything.”

“Why is it, I wondered, that old people are always so self-centered and excitable? But I just smiled benignly and stood back, comforted by the thought that soon they would be dead.”

“[About Uluru] I'm suggesting nothing here, but I will say that if you were an intergalactic traveler who had broken down in our solar system, the obvious directions to rescuers would be: "Go to the third planet and fly around till you see the big red rock. You can't miss it." If ever on earth they dig up a 150,000-year-old rocket ship from the galaxy Zog, this is where it will be. I'm not saying I expect it to happen; not saying that at all. I'm just observing that if I were looking for an ancient starship this is where I would start digging.”