There is no greater feeling than running by your bookshelf at top speed, reaching out and grabbing a book at random as you whiz by, then when you get where you're going you realize that the book you grabbed was something you'll actually learn from while taking an emergency ride on the porcelain train.
There's no worse feeling than realizing you've just grabbed your wife's copy of American Florist when it's too late to go back for another.
