Asimov always comes up with the most amazing things, doesn't he?

I liked his "time travel" story, though there's not much actual time travel in it - it's really just a plot device so he can tell a very different sort of story.

"Pact" was cute, as these things go. A little too conscious of its own cleverness, but there were some good lines, and I was waiting to see what the ending would be.