The Mysterious Stranger by Mark Twain
“The Mysterious Stranger” was written in 1898 by Mark Twain and never finished, later edited and published.
"It is true, that which I have revealed to you; there is no God, no universe, no human race, no earthly life, no heaven, no hell. It is all a dream— a grotesque and foolish dream. Nothing exists but you. And you are but a thought—a vagrant thought, a useless thought, a homeless thought, wandering forlorn among the empty eternities!"