“I have nothing but contempt for the kind of governor who is afraid, for whatever reason, to follow the course that he knows is best for the State; and as for the man who sets private friendship above the public welfare — I have no use for him, either.”
Source: Antigone, Line 181
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Sophocles 68
ancient Greek tragedian -496–-406 BCRelated quotes

Lady Bracknell, Act I
The Importance of Being Earnest (1895)
Source: The Importance of Being Earnest and Other Plays

I Ain't Got Time To Bleed (1999)
Posies for a Parlour, reported in Bartlett's Familiar Quotations, 10th ed. (1919).

“That man is not truly brave who is afraid either to seem or to be, when it suits him, a coward.”
Marginalia http://www.easylit.com/poe/comtext/prose/margin.shtml (November 1844)

U.S. Supreme Court rationale for sterilizing the "unfit." Buck v. Bell, 274 U.S. 200, 207 (1927) (endorsing Virginia's eugenics program).
1920s
Context: We have seen more than once that the public welfare may call upon the best citizens for their lives. It would be strange if it could not call upon those who already sap the strength of the State for these lesser sacrifices, often not felt to be such by those concerned, in order to prevent our being swamped with incompetence. It is better for all the world, if instead of waiting to execute degenerate offspring for crime, or to let them starve for their imbecility, society can prevent those who are manifestly unfit from continuing their kind.... Three generations of imbeciles are enough.

Jennifer Lopez shades A-list actress peers in resurfaced interview https://nypost.com/2019/09/25/jennifer-lopez-shades-a-list-actress-peers-in-resurfaced-interview/, by Nadine DeNinno, New York Post, September 25, 2019.