“Members of your family might say they are working hard all day long, while you are off at school or clarinet lessons, but the only way to know this for sure is to follow them at a discreet distance.”

“It is true, of course, that there is no way of knowing for sure whether or not you can trust someone, for the simple reason that circumstances change all of the time. You might know someone for several years, for instance, and trust him completely as your friend, but circumstances could change and he could become very hungry, and before you knew it you could be boiling in a soup pot, because there is no way of knowing for sure.”

“I have gone into town to buy a few last things we need for the expedition: Peruvian wasp repellent, toothbrushes, canned peaches, and a fireproof canoe. It will take a while to find the peaches, so don't expect me back until dinnertime. Stephano, Gustav's replacement, will arrive today by taxi. Please make him feel welcome. As you know, it is only two days until the expedition, so please work very hard today. Your giddy uncle, Monty”

“There is no way of knowing for sure whether or not you can trust someone, for the simple reason that circumstances change all of the time.”

“Even though there are no ways of knowing for sure, there are ways of knowing for pretty sure.”

“The way sadness works is one of the strange riddles of the world. If you are stricken with a great sadness, you may feel as if you have been set aflame, not only because of the enormous pain, but also because your sadness may spread over your life, like smoke from an enormous fire. You might find it difficult to see anything but your own sadness, the way smoke can cover a landscape so that all anyone can see is black. You may find that if someone pours water all over you, you are damp and distracted, but not cured of your sadness, the way a fire department can douse a fire but never recover what has been burnt down.”

“The expression "following suit" is a curious one, because it has nothing to do with walking behind a matching set of clothing. If you follow suit, it means you do the same thing somebody else has just done. If all of your friends decided to jump off a bridge into the icy waters of an ocean or river, for instance, and you jumped in right after them, you would be following suit. You can see why following suit can be a dangerous thing to do, because you could end up drowning simply because somebody else thought of it first.”