"No post on Sundays." Who said it: Vernon Dursley Book/film: The Philosopher's Stone The Dursleys have this overwhelming ability to just say things how they see it and one of Vernon's most iconic lines is that there is "no post on Sundays." Not because he thinks that the postman deserves a day off, but because it provides him with peace and quiet from Dumbledore; whom we can only assume was chuckling away to himself in his office writing out those hundreds of letters that he sent to Harry at Privet Drive.