Lionel Cassel on how guidebooks differ from travelogues
"Wit, style, a keen and original mind, an eye for the unusual -- these are what delight us in the travelogue writer. The compiler of a guidebook, on the other hand, must be a totally different kind of person. His job is to report the location, dimensions, age, and life-history of the monuments, and only incidentally, if at all the emotions or associations they arouse in his breast. Wit and originality have no place in such an assignment; in fact, they might very well get in the way. What he requires above all are the matter-of-fact virtues of thoroughness, diligence, and accuracy."
--Lionel Casson, Travel in the Ancient World