“And it came to Marcus suddenly that slaves very seldom whistled. They might sing, if they felt like it or if the rhythm helped their work, but whistling was in some way different; it took a free man to make the sort of noise Esca was making.”

“If she’s out here and not locked up in the barracks, I’ll know,” he said. He took a deep breath and whistled.“You share a whistle?” Trevanion said in disbelief.“Do you have a problem with that?” Finnikin asked.“I have a few whistles,” Lucian murmured. “Very confusing sometimes.”“Whistles are meant for combat,” Trevanion said. “Not wooing women. Women do not understand whistles.”

“[Christopher:] You cannot conceive of the quantity of explosives the armies throw at each other for each man killed! The shells make a continuous noise, sometimes like an enormous machine breaking apart. At other times, they come whistling towards you in a thoughtful sort of way and then go crump and the screw cap flies off, hurtling through the air, screaming. There’s a kind of shell which comes with a crescendo like an express train, only faster. Another kind which makes a noise like tearing calico, louder and louder. The largest kind are the ones which burst in the sky and make a double crack, like a wet canvas being shaken out by a giant. Such immense explosions to kill such small, weak animals.”

“Travelling is like a talent, like whistling or dancing. And some people have it.”

“Until the longing came again, like the longing that you hear in the whistle of a train that is going far away. But the longing isn't really in the whistle, the longing is in you—for the wonder and the loveliness that is in the world, and everywhere.”

“Reality whistles a different tune underwater.”