Quotes from book
Mother Night

Mother Night is a novel by American author Kurt Vonnegut, first published in February 1962. The title of the book is taken from Goethe's Faust.The novel takes the form of the fictional memoirs of Howard W. Campbell Jr., an American, who moved to Germany in 1923 at age 11, and later became a well-known playwright and Nazi propagandist. The story of the novel is narrated by Campbell himself, writing his memoirs while awaiting trial for war crimes in an Israeli prison. Howard W. Campbell also appears briefly in Vonnegut's later novel Slaughterhouse-Five.

“We are what we pretend to be, so we must be careful about what we pretend to be.”
Introduction (1966)
Sometimes misquoted as: Be careful what you pretend to be because you are what you pretend to be.
Mother Night (1961)

Mother Night (1961)
Context: "You hate America, don't you?" she said.
"That would be as silly as loving it," I said. "It's impossible for me to get emotional about it, because real estate doesn't interest me. It's no doubt a great flaw in my personality, but I can't think in terms of boundaries. Those imaginary lines are as unreal to me as elves and pixies. I can't believe that they mark the end or the beginning of anything of real concern to the human soul. Virtues and vices, pleasures and pains cross boundaries at will."