“The tusks which clashed in mighty brawls
Of mastodons, are billiard balls.
The sword of Charlemagne the Just
Is Ferric Oxide, known as rust.
The grizzly bear, whose potent hug,
Was feared by all, is now a rug.
Great Caesar's bust is on the shelf,
And I don't feel so well myself.”
On the Vanity of Earthly Greatness http://www.cs.rice.edu/~ssiyer/minstrels/poems/24.html
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Arthur Guiterman 6
United States writer 1871–1943Related quotes
In this story, humans have by the early 21st century explored the Solar System and sent not just one but two crewed ships to Alpha Centauri … despite which the characters moan endlessly about the dire state of the space program. “Eyes of Amber” would be another example of the Rusting Bridges [Rule]: No matter how much the space program you actually have has achieved, whether it’s first contact with aliens or trips to nearby stars, it can never have achieved as much as the space programs you can imagine would have achieved in its place, given that imaginary programs aren’t limited by issues of politics, funding, or engineering.
Review of “Eyes of Amber”, by Joan D. Vinge (as anthologized in New Women of Wonder, edited by Pamela Sargent http://jamesdavisnicoll.com/review/yet-more-sf-about-women-by-women, 2015
2010s

“So long have I been languished on the shelf
I must give all proceedings to myself.”
"Spasticus Autisticus" https://www.youtube.com/watch?v=6isXNVdguI8, On Countdown (Australia) 1981
“Let's not pretend that mental phenomena can be mapped on to the characteristics of billiard balls.”
Source: Mind and Nature, a necessary unity, 1988, p. 99

“Prayed for so oft, the dawn of fight is come.
No more entreat the gods: with sword in hand
Seize on our fates; and Caesar in your deeds
This day is great or little.”
Nil opus est uotis, iam fatum accersite ferro.
in manibus uestris, quantus sit Caesar, habetis.
Book VII, line 252 (tr. E. Ridley).
Pharsalia