Dana Scott just told this joke, which he heard from Ray Smullyan:
Two professors at a math conference stand in front of a blackboard, on which is written the sentence “Only an idiot would believe a sentence like this!” The first professor asks the second, “Do you believe that?” The second answers, “Of course not! Only an idiot would believe a sentence like this!”
This really may not be the place, but I just thought I’d let you know I still think you’re a dork. Posted by Jenn
A syllogism has three parts. Therefore, this is not a syllogism. Posted by Michael Singer
if you like puzzles of Raymond Smullyan, sure that this site (http://4chests.blogspot.com) will also enjoy it.