The poem this is attributed to, by Roy Croft, is nearly identical to a German-language poem by Eric Fried titled "Ich liebe dich" ("I Love You"). Little is known about either poem, so it is difficult to say if Croft actually wrote this poem or if he translated Fried's poem and ended up with the credit. Often the quote is attributed to "Anonymous" or Elizabeth Browning, as well,
Written by British novelist Louis De Bernieres, this quote flows from the pages of his most famous literary work, Captain Corellis Mandolin. The book is about a young Italian officer who is posted to a Greek island, where he endears himself to the locals with his humor and music.
The movie version of this quote differs slightly.