“I'm a novelist, period. An American novelist.”
'An Interview with Don DeLillo' by Maria Nadotti, Salmagundi #100, Fall, 1993
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Don DeLillo 101
American novelist, playwright and essayist 1936Related quotes
"A Conversation With Roger Zelazny" (8 April 1978), talking with Terry Dowling and Keith Curtis in Science Fiction Vol. 1, #2 (June 1978)

“The American way of life is not up for negotiation. Period.”
Stance struck at the first Earth Summit in Rio de Janeiro in 1992 https://www.economist.com/leaders/2003/02/13/a-greener-bush.
Source: https://www.smithsonianmag.com/smithsonian-institution/pope-francis-latest-bridge-gap-between-religion-culture-180956737/

“We are going through a period with no precedent in American history.”
quoted in "The Hand on the Lever" http://www.newyorker.com/magazine/2014/07/21/the-hand-on-the-lever in The New Yorker (July 21, 2014) by Nicholas Lemann
2010s

Playboy interview (1963)
Context: I'm for decency — period. I'm for anything and everything that bodes love and consideration for my fellow man. But when lip service to some mysterious deity permits bestiality on Wednesday and absolution on Sunday — cash me out.

Killing Hope: US Military and CIA Interventions Since World War II, Introduction

Kenneth Rexroth, as quoted in Ramez Qureshi on Stuart Merrill's The White Tomb: Selected Writing http://home.jps.net/~nada/merrill.htm
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1940s, Fourth Inaugural Address (1945)
Context: We Americans of today, together with our allies, are passing through a period of supreme test. It is a test of our courage — of our resolve — of our wisdom — our essential democracy. If we meet that test — successfully and honorably — we shall perform a service of historic importance which men and women and children will honor throughout all time. As I stand here today, having taken the solemn oath of office in the presence of my fellow countrymen — in the presence of our God — I know that it is America's purpose that we shall not fail.