"I have exhibited mermaids, but I never said they were real."

"I don't believe in humbug; I believe in advertising."

"Without publicity a terrible thing happens: nothing."

"The greatest humbug of all is the man who believes—or pretends to believe—that everything and everybody are humbugs."

"I have often been asked what was the secret of my success, and I have invariably replied, 'I always had the sense to know I knew nothing.'"