“We must frankly confess, then, using our empirical common sense and ordinary practical prejudices, that in the world that actually is, the virtues of sympathy, charity, and non-resistance may be, and often have been, manifested in excess. … You will agree to this in general, for in spite of the Gospel, in spite of Quakerism, in spite of Tolstoi, you believe in fighting fire with fire, in shooting down usurpers, locking up thieves, and freezing out vagabonds and swindlers.”

Source: The Geological Evidences of the Antiquity of Man (1863), Ch.20, p. 387-388

"Sermons in Cats the musical"
Music at Night and Other Essays (1931)

Willy
Death of a Salesman (1949)

While signing the Bill Providing Restitution for the Wartime Internment of Japanese-American Civilians, quoting himself at the funeral of Kazuo Masuda in December 1945 (10 August 1988) http://history.wisc.edu/archdeacon/404tja/redress.html
1980s, Second term of office (1985–1989)
Context: Blood that has soaked into the sands of a beach is all of one color. America stands unique in the world: the only country not founded on race but on a way, an ideal. Not in spite of but because of our polyglot background, we have had all the strength in the world. That is the American way.

Christopher
Source: The Milk Train Doesn't Stop Here Anymore (1963)

Dijkstra (1998) https://www.cs.utexas.edu/users/vl/notes/dijkstra.html
1990s

Willy
Death of a Salesman (1949)

1920s, Whose Country Is This? (1921)
Context: From its very beginning our country has been enriched by a complete blend of varied strains in the same ethnic family. We are, in some sense, an immigrant nation, molded in the fires of a common experience. That common experience is our history. And it is that common experience we must hand down to our children, even as the fundamental principles of Americanism, based on righteousness, were handed down to us, in perpetuity, by the founders of our government.