POETS to come! orators, singers, musicians to come!
Not to-day is to justify me, and answer what I am for;
But you, a new brood, native, athletic, continental, greater than
before known,
Arouse! Arouse--for you must justify me--you must answer.
I myself but write one or two indicative words for the future,
I but advance a moment, only to wheel and hurry back in the darkness.
I am a man who, sauntering along, without fully stopping, turns a
casual look upon you, and then averts his face,
Leaving it to you to prove and define it,
Expecting the main things from you.
Walt Whitman
http://www.poemhunter.com/poem/poets-to-come/