"It's easier to fool people than to convince them they have been fooled!"
"The fact that man knows right from wrong proves his intellectual superiority to other creatures, but the fact that he can do wrong proves his moral inferiority to any creature that cannot."
"If you don't read the newspaper, you're uninformed. If you read the newspaper, you're mis-informed."
"A classic is a book that is praised by all and read by no one."
"Everybody talks about the weather, but nobody does anything about it!"
"I think I can say, and say with pride, that we have some legislatures that bring higher prices than any in the world!" -- Mark Twain, 4th of July speech, 1873
See also: Putting words in Mark Twain's mouth