TV Quote of the Day (‘The Big Bang Theory,’ on Leonard's Projected Life Without Penny)

Dr. Sheldon Cooper [played by Jim Parsons]: “Well, if we accept your premise, and also accept the highly improbable assumption that Penny is the only woman in the world for you, then we can logically conclude that the result of blowing it would be that you end up a lonely, bitter old man with no progeny. The image of any number of evil lighthouse keepers from ‘Scooby Doo’ cartoons comes to mind.” —The Big Bang Theory, Season 1, Episode 17, “The Tangerine Factor,” original air date May 19, 2008, teleplay by Lee Aronsohn and Steven Molaro, directed by Mark Cendrowski