Source: The Gift of Fear: Survival Signals That Protect Us from Violence
“Except for cases of pathological incapacity, one can and must communicate, and thereby contribute in a useful and easy way to the peace of others and oneself, because silence, the absence of signals, is itself a signal, but an ambiguous one, and ambiguity generates anxiety and suspicion. To say that it is impossible to communicate is false; one always can.”
The Drowned and the Saved (1986)
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Primo Levi 44
Italian chemist, memoirist, short story writer, novelist, e… 1918–1987Related quotes

“Occasionally one speaks… of signals or signal chains.”
It should be noted that the word signal means the transmission of signs and hence concerns the very principle of causal order...
The Philosophy of Space and Time (1928, tr. 1957)

Referring to an aphorism of Martin Rees. (see Misattributed below)
Source: The Demon-Haunted World : Science as a Candle in the Dark (1995), Ch. 12 : The Fine Art of Baloney Detection, p. 221

Nul ne peut par l'accumulation de tous les moyens priver l'autre de l'instruction nécessaire pour son bonheur; l'instruction doit-être commune.
[in Gracchus Babeuf avec les Egaux, Jean-Marc Shiappa, Les éditions ouvrières, 1991, 49, 27082 2892-7, ; Manifeste des Plébéien]
On education

Donald N. Levine (1988), The Flight from Ambiguity: Essays in Social and Cultural Theory. p. 218; Partly cited in: David L. Sills, Robert King Merton (2000), Social Science Quotations: Who Said What, When, and Where. p. 129-130

"La vida es difícil. Para estar en paz con uno mismo hay que decir la verdad. Para estar en paz con el prójimo hay que mentir."
Descanso de caminantes, 2001.

Firing Line with William F. Buckley Jr.: The Trouble with Enoch https://www.youtube.com/watch?v=nN6sTBSAp-A&feature=youtu.be&t=12m8s (recorded 19 May 1969)
1960s

“Hell is the incapacity to be other than the creature one finds oneself ordinarily behaving as.”
Source: Eyeless in Gaza
“A certain ambiguity of rhythm is one of the beauties of a poem”
The Anatomy of Poetry, Marjoie Boulton, Routledge & Kegan, London 1953.