Shin Megami Tensei: Persona X

Game Description

I dreamt I was a butterfly.
I couldn't tell I was dreaming, but when I woke, I was not a butterfly.
Was I dreaming that I was the butterfly, or was the butterfly dreaming that it was me?
Even if there's a difference between the butterfly and I, the distinction isn't absolute.
And there is no relationship of cause and effect...
-Soshi