The Caves Of Steel by Isaac Asimov;
The Stars My Destination by Alfred Bester.
Now, in 2016, I discuss American future histories on a worldwide computer network and these include Asimov's future history which includes The Caves Of Steel. Shortly after buying my first two sf paperbacks, I read "The Game Of Glory" by Poul Anderson in Venture Science Fiction, not yet suspecting either that there was a Dominic Flandry series or that this series was part of another future history.
The Stars My Destination quotes a few lines of "Tom o' Bedlam." I identified with the line:
"Ten leagues beyond the wide world's end"
- and regarded it as summarizing science fiction. The full quatrain reads:
"By a knight of ghosts and shadows
"I summoned am to tourney
"Ten leagues beyond the wide world's end:
"Methinks it is no journey."
I need not tell Poul Anderson fans that the first line is the title of a Dominic Flandry novel but I will add that it is also quoted in yet another future history on p. 901 of The Prince (New York, 2002) by Jerry Pournelle and SM Stirling. And that is a very good place to end blogging for the day.