“The extremists in his movement had discredited themselves thoroughly, and it would be a long time before the world heard of them again.”
Guardian Angel, p. 220
2000s and posthumous publications, The Collected Stories of Arthur C. Clarke (2001)
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Arthur C. Clarke 207
British science fiction writer, science writer, inventor, u… 1917–2008Related quotes

Source: Margaret Sanger: An Autobiography (1938), Chapter 30, "Now Is the Time for Converse", p. 374.

By Raychand Boral in "Begum Akhtar the Undisputed Malika of Ghazals".

Part 6 “Aleph Null”, Chapter 4 (p. 226)
Against Infinity (1983)

About an embarrassing incident. Thrasher magazine, May 2010 http://www.thrashermagazine.com/articles/music-interviews/afi/

"A Philologist on Esperanto" in The British Esperantist (May 1932).
Years later, in a 1956 letter (quoted more extensively below) he stated that Esperanto and other constructed languages were "dead, far deader than ancient unused languages, because their authors never invented any Esperanto legends."