Can anybody identify a short story about the last two men on Earth?
The first part of the story occurs in the years before humanity began colonizing other worlds.
One man was an evil mass-murdering megalomaniac who was defeated in a huge war that costs tens of millions of lives. He escaped justice and defeat at the last minute by hiding in a hibernation chamber to wait a few centuries to emerge. However, due to a malfunction, he did not emerge until hundreds of millions of years later.
The second part occurs millions of years later after humanity has spread throughout the entire galaxy.
A single government oversees the entire collection of human inhabited worlds. One man, who is extremely ethical, comes up with an alternative system of government. Because he is a threat to the current powers that be, he is tried and exiled. His exile is to be displaced into the far future. He chooses to live out his exile on an Earth that is no longer inhabited.
The third part occurs back on Earth in the far, far distant future.
While wandering about in his lonely exile, the ethical man comes across a hibernation chamber and opens it. He then discovers the man who just woke up was a mass-murdering psychopathic dictator who evaded justice and hoped to create a new reign of terror.