origin: a boy can dream, can't he?

[danparks]

I've heard and read the phrase "a boy can dream, can't he?" (also "a man can dream, can't he?"). Sound like it might be a line from a book or movie. Plenty of search matches on the phrase, but none told me the origin of it.

[Barb_D]

Do you want the origin, or just to have a better understanding of what it means?

[danparks]

I'm just curious about the origin. Thanks.