A.) “People willingly believe what they want to believe.”

- Julius Caesar, The Gallic War

B.) "There's a sucker born every minute."

- attrib. P.T. Barnum

C.) "The customer's always right."

- American saying

D.) "The fool sees not the same tree that he wise man sees."

- Blake, The Marriage of Heaven and Hell

E.)  "A word, to the wise, is sufficient."

- trad. saying; attribution unknown

E.) ". . . silence, cunning, and exile."

- Joyce, Portait of the Artist