"the two perpetually in struggle"

[Dave Monroe]

"The pursuit of the good and evil are now linked in astronomy as in
almost all science. ... The fate of human civilization will depend on
whether the rockets of the future carry the astronomer's telescope or
a hydrogen bomb."

— Sir Bernard Lovell, The Individual and the Universe (1959), 73.

http://todayinsci.com/L/Lovell_Bernard/LovellBernard-Quotations.htm

Cf./vs. ...

". . . Manichaeans who see two Rockets, good and evil, who speak
together in the acred idiolalia of the Primal Twins (some say their
names are Enzian and Blicero), of
a good Rocket to take us to the Stars, an evil Rocket for the World's
suicide, the two perpetually in struggle." (GR, Pt. IV, p. 727)

https://books.google.com/books?id=GGPm4I3BbxAC&pg=PA727
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Pynchon-l / http://www.waste.org/mail/?list=pynchon-l