Robert Laurence Binyon - Nothing Is Enough!

No, though our all be spent-
Heart's extremest love,
Spirit's whole intent,
All that nerve can feel,
All that brain invent,-
Still beyond appeal
Will Divine Desire
Yet more excellent
Precious cost require
Of this mortal stuff,-
Never be content
Till ourselves be fire.
Nothing is enough!

Robert Laurence Binyon

http://www.poemhunter.com/poem/nothing-is-enough-3/