I had a comrade who was my adversary; not in pursuits, nor in service, nor in love, but our views were never alike on any subject, and whenever we met, endless argument arose between us.
We argued about everything: about art, and religion, and science, about life on earth and beyond the grave, especially about life beyond the grave.
He was a person of faith and enthusiasm. One day he said to me, 'You laugh at everything; but if I die before you, I will come to you from the other world.... We shall see whether you will laugh then.'
And he did, in fact, die before me, while he was still young; but the years went by, and I had forgotten his promise, his threat.
One night I was lying in bed, and could not, and, indeed, would not sleep.
In the room it was neither dark nor light. I fell to ...