“A crime, which, though perhaps not considered by law as the highest, is in truth and in fact, the blackest sin, which can contaminate the hands, or pollute the soul of man.”
Fielding, Henry; ed. by William Ernest Henley. 1903. The Complete Works of Henry Fielding, Esq: Miscellaneous writings. W. Heinemann. p. 162
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Henry Fielding 70
English novelist and dramatist 1707–1754Related quotes

1963, Limited Nuclear Test Ban Treaty speech
Context: Continued unrestricted testing by the nuclear powers, joined in time by other nations which may be less adept in limiting pollution, will increasingly contaminate the air that all of us must breathe. Even then, the number of children and grandchildren with cancer in their bones, with leukemia in their blood, or with poison in their lungs might seem statistically small to some, in comparison with natural health hazards. But this is not a natural health hazard — and it is not a statistical issue. The loss of even one human life, or the malformation of even one baby — who may be born long after we are gone — should be of concern to us all. Our children and grandchildren are not merely statistics toward which we can be indifferent.

quoted in B.R. Ambedkar, Pakistan or The Partition of India (1946)

Concerning right-wing radio shortly before the 2004 U.S. Presidential Election, in NOW (17 December 2004) http://www.pbs.org/now/transcript/transcript351_full.html
Context: On the eve of the election last month my wife Judith and I were driving home late in the afternoon and turned on the radio for the traffic and weather. What we instantly got was a freak show of political pornography: lies, distortions, and half-truths — half-truths being perhaps the blackest of all lies. They paraded before us as informed opinion.

D.H. v. H.H. http://caselaw.findlaw.com/al-supreme-court/1303306.html (February 15, 2002), quoted in [2017-09-29, Michelle Goldberg, How Donald Trump Opened the Door to Roy Moore, The New York Times, https://www.nytimes.com/2017/09/29/opinion/donald-trump-roy-moore.html]

The Tragic Sense of Life (1913), IV : The Essence of Catholicism
Context: The real sin — perhaps it is a sin against the Holy Ghost for which there is no remission — is the sin of heresy, the sin of thinking for oneself. The saying has been heard before now, here in Spain, that to be a liberal — that is, a heretic — is worse than being an assassin, a thief, or an adulterer. The gravest sin is not to obey the Church, whose infallibility protects us from reason.

Book II, ch. 3 (trans. Constance Garnett)
The Elder Zossima, speaking to a devout widow afraid of death
The Brothers Karamazov (1879–1880)