‘Her voice is full of money,’ he said suddenly.
That was it. I’d never understood before. It was full of money – that was the inexhaustible charm that rose and fell in it, the jingle of it, the cymbals’ song of it.

F. Scott Fitzgerald

The Great Gatsby. Chapter 7, Gatsby about Daisy. She respresents money – and that is why he is so in love with her.