'I slept, and dreamed that life was beauty;
I woke, and found that life was duty.
Was thy dream then a shadowy lie?
Toil on, sad heart, courageously,
And thou shall find thy dream to be
A noonday light and truth to thee.'
Louisa May Alcott
http://www.poemhunter.com/poem/i-slept-and-dreamed-that-life-was-beauty/