Professor Henry Jones: Well, he who finds the Grail must face the final challenge.
Indiana Jones: What final challenge?
Professor Henry Jones: Three devices of such lethal cunning.
Indiana Jones: Booby traps?
Professor Henry Jones: Oh yes. But I found the clues that will safely take us through, in the Chronicles of St. Anselm.
Indiana Jones: But what are they? Can't you remember?
Professor Henry Jones: I wrote them down in my Diary so that I wouldn't have to remember.