650
Pain—has an Element of Blank—
It cannot recollect
When it begun—or if there were
A time when it was not—
It has no Future—but itself—
Its Infinite contain
Its Past—enlightened to perceive
New Periods—of Pain.
Emily Dickinson
http://www.poemhunter.com/poem/pain-mdash-has-an-element-of-blank/