From ‘The Divine Invasion’ – PK Dick :
There are two realities, he said to himself. The Black Iron Prison, which is called the Cave of Treasures, in which they now live, and the Palm Tree Garden with its enormous spaces, its light, where they originally dwelt. Now they are literally blind, he thought. Literally unable to see more than a short distance; far-away objects are invisible to them now. Once in a while one of them guesses that formerly they had faculties now gone; once in a while one of them discerns the truth, that they are not now what they were and not now where they were. But they forget again, exactly as I forgot. And I still forget somewhat, he realized. I still have only a partial vision. I am occluded, too. But I will not be, soon.