"I sleep. If I dream, I do not know on waking".

I sleep.
If I dream,
I do not know on waking
What it was I dreamt.
I sleep.
If I do not dream,
I waken
In an open space
I do not recognise, because I woke
To what I still don't know.
What's best is neither dreaming nor
   not dreaming
And never waking...