Who said “I'm Chevy Chase, and you're not.”?

“A man may be so much of every thing, that he is nothing of any thing.”

“I believe that man is in the last resort so free a being that his right to be what he believes himself to be cannot be contested.”

“The minute you or anybody else knows what you are you are not it, you are what you or anybody else knows you are and as everything in living is made up of finding out what you are it is extraordinarily difficult really not to know what you are and yet to be that thing.”

“I is another.”

“I know you are, but what am I? [As Pee-Wee Herman]”

“Actors search for rejection. If they don't get it they reject themselves.”