" They waited for the elevator. " Most people love butterflies and hate moth," he said. "But moths are more interesting - more engaging."
"They're destructive."
"Some are, a lot are, but they live in all kinds of ways. Just like we do." Silence for one floor.
"There's a moth, more than one in fact, that lives only on tears," he offered. "That's all they eat or drink."
"What kind of tears? Whose tears?"
"The tears of large land mammals, about our size.
The old definition of moth was, 'anything that gradually, silently eats, consumes, or wages any other thing.'
It was a verb for destruction too. . . . "

― Thomas Harris , The Silence of the Lambs (Hannibal Lecter, #2)