[Johnny Cash song] `Flesh and Blood` is a 1970 single written and recorded by Johnny Cash and was featured in the film, I Walk the Line starring Gregory Peck (see: soundtrack album I Walk the Line). The song describes a man observing and interacting with nature, but noting that it is no substitute for a human partner; `flesh and blood needs... Found on http://en.wikipedia.org/wiki/Flesh_and_Blood_(Johnny_Cash_song)