Twentieth Century Standard Puzzle Book, Classics To Go

Excerpt: "Riddle - In the ears of young and old, I repeat what I am told; and they hear me, old and young, though I have no busy tongue. When a thunder-clap awakes me, not a touch of terror takes me; Yet so tender is my ear, that the softest sound I fear. Call me not with bated breath, for a whisper is my death. - Solution: Echo".