(_Prologue to 'The Two Poets of Croisic.'_)

Such a starved bank of moss
Till, that May-morn,
Blue ran the flash across:
Violets were born!

Sky--what a scowl of cloud
Till, near and far,
Ray on ray split the shroud:
Splendid, a star!

World--how it walled about
Life with disgrace,
Till God's own smile came out:
That was thy face!

Robert Browning

http://www.poemhunter.com/poem/apparitions/