Well... I can't say that it was the only world, if you wished to count the Castle of the Moon as a world. Certainly it almost functioned like one, albeit small. I'm damn sure it had a personality or at least a bit of sentience for how often it summoned us.
[If you're talking about the drink he'll apologize for that. If you're talking about him you might receive a less silver-lace tongue than he's presenting should you mention it.]