“If we have learned one thing from the history of invention and discovery, it is that, in the long run — and often in the short one — the most daring prophecies seem laughably conservative.”
The Exploration of Space (1951), p. 111
1950s
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Arthur C. Clarke 207
British science fiction writer, science writer, inventor, u… 1917–2008Related quotes

The Books in My Life (1952) Preface (2nd edition. New York: New Directions Publishing, 1969, p. 12)

Letter to Hans Muehsam (9 July 1951), Einstein Archives 38-408, quoted in The Ultimate Quotable Einstein (2010) by Alice Calaprice, p. 404 http://books.google.com/books?id=G_iziBAPXtEC&lpg=PP1&pg=PA404#v=onepage&q&f=false
1950s

2010s, 2014, What is Social Justice (2014)

The Dark Ages (1968), p. 188
General sources

Introduction, Sec. 14
De architectura (The Ten Books On Architecture) (~ 15BC), Book IX