On his experience as a POW in Changi Prison on Singapore, which became the subject of his novel King Rat
Interview with Don Swaim (1986)
“It is easy to be wise after the event.”
Source: The Complete Sherlock Holmes
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Arthur Conan Doyle 166
Scottish physician and author 1859–1930Related quotes

“The two dukes were wise after the event (as the Bretons say).”
Ces deux ducs dessusdits estoient sages après le coup (comme l'on dit des Bretons).
Bk. I, ch. 16.
Mémoires

Gouverneur Morris to Robert Walsh ( February 5, 1811 http://www.bgdlegal.com/clientuploads/Publications/Publications/John%20Bush%20-%20Gouverneur%20Morris.pdf)
1810s

“We cannot make Events. Our Business is wisely to improve them.”
Letter to Samuel Cooper (30 April 1776) http://www.gutenberg.org/etext/2093
Context: We cannot make Events. Our Business is wisely to improve them. There has been much to do to confirm doubting Friends & fortify the Timid. It requires time to bring honest Men to think & determine alike even in important Matters. Mankind are governed more by their feelings than by reason.

“Literature is analysis after the event.”
Quoted in Children of Albion: Poetry of the Underground in Britain, ed. Michael Horovitz (1969): Afterwords, section 2

“Wisdom always comes after the event.”
Tiya -A Parrot's Journey Home ( Page 41 )
Source: The Evolution of Civilizations (1961) (Second Edition 1979), Chapter 1, Scientific Method and the Social Sciences, p. 35