It was not safe to spend time looking back. — Lois Lowry

For the first time, he heard something that he knew to be music. He heard people singing. Behind him, across vast distances of space and time, from the place he had left, he thought he heard music too. But perhaps, it was only an echo.

Your father means that you used a very generalized word, so meaningless that it has become almost obsolete, his mother explained carefully.

"I liked the feeling of love," [Jonas] confessed. He glanced nervously at the speaker on the wall, reassuring himself that no one was listening. "I wish we still had that," he whispered. "Of course," he added quickly, "I do understand that it wouldn't work very well. And that it's much better to be organized the way we are now. I can see that it was a dangerous way to live."