Some prisoned moon in steep cloud-fastnesses,—
Throned queen and thralled; some dying sun whose pyre
Blazed with momentous memorable fire;—
Who hath not yearned and fed his heart with these?
Who, sleepless, hath not anguished to appease
Tragical shadow's realm of sound and sight
Conjectured in the lamentable night? . . .
Lo! the soul's sphere of infinite images!
What sense shall count them? Whether it forecast
The rose-winged hours that flutter in the van
Of Love's unquestioning unrevealèd span,—
Visions of golden futures: or that last
Wild pageant of the accumulated past
That clangs and flashes for a drowning man.

Dante Gabriel Rossetti

http://www.poemhunter.com/poem/sonnet-lxii-the-soul-s-sphere/