“Everybody always knows something," said Adam, "even if it's something they don't know they know.”

— Agatha Christie , book Cat Among the Pigeons

Source: Cat Among the Pigeons

Last update June 3, 2021. History

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Agatha Christie 320

English mystery and detective writer 1890–1976

Patti Callahan Henry American writer

Source: Between The Tides

“Romantic love interests almost everybody, because almost everybody knows something about it, or would like to know.”

Henry Van Dyke (1852–1933) American diplomat

Preface
The Ruling Passion http://www.gutenberg.org/dirs/etext97/rlpsn10.txt (1901)

“Don't expect things from everything. But, know there is always something in nothing.”

Yusuf Cornelius Otijenu

“They know there's something strange, but don't know what it is.”

Clifford D. Simak Highway of Eternity

Highway of Eternity (1986)
Context: What your friend told you of his seeing of the time wall is true, Henry said in Boone's mind. I know he saw it, although imperfectly. Your friend is most unusual. So far as I know, no other human actually can see it; although there are ways of detecting time. I tried to show him a sniffler. There are a number of snifflers, trying to sniff out the bubble. They know there's something strange, but don't know what it is.