“Silence gives consent.”
Act II.
The Good-Natured Man (1768)
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Oliver Goldsmith 134
Irish physician and writer 1728–1774
Related quotes

“4165. Silence gives Consent.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)

“Silence can be either protest or consent, but most times it’s fear.”
Source: The Sellout

“God is the silence of the universe, and man is the cry that gives meaning to that silence.”
Deus é o silêncio do universo, e o homem o grito que dá um sentido a esse silêncio.
Lanzarote Notebooks (1990), quoted in The Notebook, entry for 9 October 2008.

“Parties cannot by consent give to the Court a power which it would not have without it.”
In re Ayhner; Ex parte Bischofishiem (1887), L. J. 57 Q. B. 168.

“And how could anyone consent to give up the smell of open books, old or new?”
Source: The Swan Thieves

“Give me silence, water, hope
Give me struggle, iron, volcanoes.”

These words were quoted by the conservative writer Cal Thomas as coming from Professing Feminism, a book by Daphne Patai and Noretta Koertge which he mistakenly ascribed to Catharine MacKinnon.
http://www.snopes.com/quotes/mackinno.htm
The actual passage in that book are the authors' characterization of MacKinnon's views rather than a direct quotation: And Andrea Dworkin and Catharine MacKinnon have long argued that in a patriarchal society all heterosexual intercourse is rape because women, as a group, are not in a strong enough social position to give meaningful consent—an assault on individual female autonomy uncannily reminiscent of old arguments for why women should not have political rights.
Instead MacKinnon argues that heterosexuality "institutionalizes male sexual dominance and female sexual submission" (1982) and that "Sexual access is regularly forced or pressured or routinized beyond denial" (1991).
Misattributed