A thought went up my mind to-day
That I have had before,

But did not finish,--some way back,
I could not fix the year,
Nor where it went, nor why it came
The second time to me,
Nor definitely what it was,

But somewhere in my soul, I know
I've met the thing before;
It just reminded me--'t was all--
And came my way no more.
Emily Dickinson