“My words never reached him; I could almost hear them drop, one by one, like so many pebbles against a closed window.”

For the Good Times
Song lyrics, Kristofferson (1970)

"When I hear the word culture, I reach for my revolver" was also is used in the 1981 Cannes Film Festival Award winner Mephisto spoken by a character known as "The General" in the English dubbed version.
Misattributed
Variant: "When I hear the word culture, I reach for my revolver." Often attributed to Göring, who might have used such lines, these statements are derived from those in the play Schlageter by Hanns Johst: "Wenn ich Kultur höre … entsichere ich meinen Browning!" [Whenever I hear of culture... I release the safety-catch of my Browning!] (Act 1, Scene 1) The play was first performed in April 1933 for Hitler's birthday. Reported as a misattribution in Paul F. Boller, Jr., and John George, They Never Said It: A Book of Fake Quotes, Misquotes, & Misleading Attributions (1989), p. 36.

emanating from all those old graves. The people who'd drafted the Constitution had sat in a room dominated by George Washington himself, and whatever honor they'd lacked he'd probably provided from his own abundant supply, just by sitting there and looking at them. The current Congress had no such mentor/living god to take George's place, and more was the pity, Ryan thought.
The Bear and the Dragon (2000), Ch. 12 : Conflicts of the Pocket
2000s

When receiving an award from an organization called Computer Professionals for Social Responsibility.
[Geeks Win: A survey of the oddballs who write the codes that make the 21st-century world go round, The New York Times Book Review, BR18, 03624331, 4 November 2001]

Sunshine Superman (1966), Season Of The Witch

Erika Jayne interview to CR Fashion Book https://www.crfashionbook.com/fashion/a19743941/erika-jayne-pretty-mess-real-housewives-fashion/ (2018)

As quoted in Women on War : Essential Voices for the Nuclear Age (1988), by Daniela Gioseffi, p. 103
Variant: A pebble cast into a pond causes ripples that spread in all directions. Each one of our thoughts, words and deeds is like that. No one has a right to sit down and feel hopeless. There's too much work to do.
As quoted in Singing the Living Tradition (1993) by the Unitarian Universalist Association, p. 560
Context: What I want to bring out is how a pebble cast into a pond causes ripples that spread in all directions. And each one of our thoughts, words and deeds is like that. Going to jail for distributing leaflets advocating war tax refusal causes a ripple of thought, of conscience among us all. And of remembrance too. …. There may be ever improving standards of living in the U. S., with every worker eventually owning his own home and driving his own car; but our modern economy is based on preparation for war. … The absolutist begins a work, others take it up and try to spread it. Our problems stem from our acceptance of this filthy, rotten system.

The Sound of Silence
Song lyrics, Wednesday Morning, 3 A.M. (1964)