Breaking Cover https://en.wikiquote.org/wiki/Special:BookSources/0671245481 (1980), p. 25
“It shows you, Madame, the dangers of conversation. It is a profound belief of mine that if you can induce a person to talk to you for long enough, on any subject whatever, sooner or later they will give themselves away.”
After the Funeral (1953)
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Agatha Christie 320
English mystery and detective writer 1890–1976Related quotes

44 : God Alone Is, p. 73.
The Everything and the Nothing (1963)
Context: Give up all forms of parrotry. Start practising whatever you truly feel to be true and justly to be just. Do not make a show of your faiths and beliefs. You have not to give up your religion, but to give up clinging to the husk of mere ritual and ceremony. To get to the fundamental core of Truth underlying all religions, reach beyond religion.

“If you talk to people, you can have whatever you want.”
26.09.1978 - p.21
Theft by Finding: Diaries, Volume 1 (1977-2002) (2017)

Never Scared (HBO, 2004)