“The Hitchhiker’s Guide has already supplanted the great Encyclopaedia Galactica as the standard repository of all knowledge and wisdom, for though it has many omissions . . . it scores over the older, more pedestrian work in two important respects. First, it is slightly cheaper; and secondly it has the words DON’T PANIC inscribed in large friendly letters on its cover.”—The foreword to The Hitchhiker’s Guide to the Galaxy, 1979[src]
