The link below will take you to the talk Ray Bradbury gave at ConFederation, the 1986 World Science Fiction Convention held in Atlanta, Georgia. Ray was one of the Convention's Guests of Honor. His speech begins about 28 minutes and 30 seconds into the video. While the film does not appear to contain Ray's entire talk, it still lasts over 20 minutes. We can only be thankful it was recorded and still exists!

https://www.youtube.com/watch?v=GkDtPgWr8w8&t=2107s

The link below will take you to additional footage from the 1986 World Science Fiction Convention in Atlanta, at which Ray Bradbury was one of the guests of honor. A excellent interview with Ray begins at about the 32-minute mark. And in the interview, Ray praises the scene in the library with Jonathan Pryce (Mr. Dark) and Jason Robards (Charles Halloway) in the film SOMETHING WICKED THIS WAY COMES, which is also my favorite scene in that movie:

https://www.youtube.com/watch?v=NSfyivaJb7U

That was a great scene and Jonathan Pryce was a perfect Mr. Dark.