“When I was your age, television was called books,” the grandfather from The Princess Bride movie tells his grandson. Television and movies often start out as books, and The Princess Bride is no exception. It was based on the 1973 book The Princess Bride: S. Morgenstern’s Classic Tale of True Love and High Adventure: the “Good Parts” Version and was written by William Goldman. William Goldman also wrote the screenplay for the movie, which makes for an interesting comparison between the two.