“In the years ahead, I will never hold a position higher or a covenant more sacred than that of President of the United States. But there is no title I will wear more proudly than that of citizen.”

2016, DNC Address (July 2016)
Context: You know, nothing truly prepares you for the demands of the Oval Office. You can read about it. You can study it. But until you’ve sat at that desk, you don’t know what it’s like to manage a global crisis, or send young people to war. But Hillary has been in the room; she’s been part of those decisions. She knows what’s at stake in the decisions our government makes — what’s at stake for the working family, for the senior citizen, or the small business owner, for the soldier, for the veteran. And even in the midst of crisis, she listens to people, and she keeps her cool, and she treats everybody with respect. And no matter how daunting the odds, no matter how much people try to knock her down, she never, ever quits.
That is the Hillary I know. That’s the Hillary I’ve come to admire. And that’s why I can say with confidence there has never been a man or a woman — not me, not Bill, nobody — more qualified than Hillary Clinton to serve as president of the United States of America.

Letter to Andrew Jackson (14 June 1830), quoted in Correspondence of Andrew Jackson, Volume 4, ed. David Maydole Matteson (1929), p. 146

Built to Last, written with Jeff Lynne
Lyrics, Into The Great Wide Open (1991)

"Role Model" (Track 9).
1990s, The Slim Shady LP (1999)

Of Law and Life and Other Things: Papers and Address of Felix Frankfurter (1965).
Other writings

In 1858 http://stoprepublicans.blogspot.com/2008/06/democrats-held-these-words-to-be-self.html
1850s