Of some long never- thought- of
And wholly insignificant reality
Comes suddenly back
And with it
The pleasure of being again
In another time, another world
Life as it once was-
And as suddenly as it appeared
It vanishes
And we are left alone
With empty longing
For lost worlds
That will never return again-
Shalom Freedman
http://www.poemhunter.com/poem/sometimes-an-incidental-memory/