Books
Money is a powerful aphrodisiac. But flowers work almost as well.
— Robert Heinlein ‧ Time Enough for Love

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Heinlein's speaker admits cash is a strong lure for romance. Then comes the twist: a bunch of flowers gets you nearly the same result. It's a wry way of saying a small, sweet gesture can rival wealth.
Context reviewed