The Nitpicker's Guide for Classic Trekkers Quotes

“When taking Spock to see the spores, Leila comments, "It's not much further." having been beaten about the head severely on the difference between "further" and "farther," I believe I can say with some trembling confidence that she should say, "it's not much farther." "Further" means "to a greater extent or degree" whereas "farther" means "to a greater distance." (I know this is really picky, but hey, that's my business.)”
― Phil Farrand, The Nitpicker's Guide for Classic Trekkers