“The United States has never entered a serious war, and has never been victorious.”

First Inaugural Address (March 4, 1897).
1890s

Remark after the Versailles Peace Conference, as quoted in Wit and Wisdom (1936) edited by Jack Lait
As quoted in ...

2000s, 2001, First inaugural address (January 2001)
Context: America has never been united by blood or birth or soil. We are bound by ideals that move us beyond our backgrounds, lift us above our interests and teach us what it means to be citizens. Every child must be taught these principles. Every citizen must uphold them. And every immigrant, by embracing these ideals, makes our country more, not less, American. Today, we affirm a new commitment to live out our nation's promise through civility, courage, compassion, and character. America, at its best, matches a commitment to principle with a concern for civility. A civil society demands from each of us good will and respect, fair dealing and forgiveness. Some seem to believe that our politics can afford to be petty because, in a time of peace, the stakes of our debates appear small.

Mark Chen (2016) cited in " US ‘one China’ policy debated at forum http://www.taipeitimes.com/News/front/archives/2016/12/15/2003661235" on Taipei Times, 15 December 2016

First Report, p. 34
U.S. Navy at War, 1941-1945: Official Reports to the Secretary of the Navy (1946)

On the American working class in “Ibram X Kendi on why not being racist is not enough” https://www.theguardian.com/world/2019/aug/14/ibram-x-kendi-on-why-not-being-racist-is-not-enough in The Guardian (2019 Aug 14)

Source: The Next 100 Years: A Forecast for the 21st Century (2009), pp. 224–225
Context: In the United States, minority populations were never an indigestible mass—with the major exceptions of the one ethnic group that did not come here voluntarily (African Americans) and those who were here when Europeans arrived (American Indians). The rest all came, clustered and dispersed, and added new cultural layers to the general society. This has always been the strength of the United States. In much of Europe, for example, Muslims have retained religious and national identities distinct from the general population, and the general population has given them little encouragement to blend. The strength of their own culture has therefore been overwhelming.

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.

Treaty of Tripoli, Article 11 http://avalon.law.yale.edu/18th_century/bar1796t.asp#art11, signed at Tripoli on November 4, 1796, and at Algiers on January 3, 1797 and received ratification unanimously from the U.S. Senate on June 7, 1797; it was signed into law by John Adams (the original language is by Joel Barlow, U.S. Consul). This is a declaration of the secular character of the government of the United States, sometimes misattributed to John Adams, who signed the treaty into law. A portion is also sometimes misattributed to George Washington, and also misquoted as "This nation of ours was not founded on Christian principles."
Treaty of Tripoli (1797)