In the following quote, Fiver, a sensitive rabbit, has just heard an evocative poem recited by another rabbit, in an underground hall.

They followed Fiver up the run and overtook him at the entrance. Before either of them could say a word, he turned and began to speak as though they had asked him a question.

“You felt it, then? And you want to know whether I did? Of course I did. That’s the worst part of it. There isn’t any trick. He speaks the truth. So as long as he speaks the truth it can’t be folly — that’s what you’re going to say, isn’t it? I’m not blaming you, Hazel. I felt myself moving toward him like one cloud drifting into another. But then at the last moment I drifted wide. Did I say the roof of the hall was made of bones? No! It’s like a great mist of folly that covers the whole sky: and we shall never see to go by Frith’s light any more. Oh, what will become of us? A thing can be true and still be desperate folly, Hazel.”

Watership Down, pp. 111 – 112