The passers-by glanced in wonder at the sullen, heavy youth, who, in coarse, ill-fitting clothes, was in the company of such a graceful, refined-looking girl. He was like a common gardener walking with a rose.

– Oscar Wilde

The Picture of Dorian Gray, Chapter 5. When sister and brother Sibyl and James stroll down the street together they appear a very odd looking pair to people. One the heavy and moody youth, burdened down with his concern over his sister. The other a beautiful girl full of grace and refinement. A simile and metaphor are used to compare the two to a gardener and a rose.