Directly from my brain and onto the internet.
Published on October 7, 2006 By PJ_ In Misc
∀p∈{people}( ∃t∈{time}( Person 'p' can be fooled at time 't' ) )
∃p∈{people}( ∀t∈{time}( Person 'p' can be fooled at time 't' ) )
¬( ∀p∈{people}( ∀t∈{time}( Person 'p' can be fooled at time 't' ) ) )
     -- Abe Lincoln

(Or words to that effect.)

Comments
on Oct 12, 2006
I like hearing bob marley paraphrase it. Discrete math?