“For the habit of arguing in support of atheism, whether it be done from conviction or in pretence, is a wicked and impious practice.”
Book II, section 67
De Natura Deorum – On the Nature of the Gods (45 BC)
Original
Mala enim et impia consuetudo est contra deos disputandi, sive ex animo id fit sive simulate.
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Marcus Tullius Cicero 180
Roman philosopher and statesman -106–-43 BCRelated quotes

Source: Reason: The Only Oracle Of Man (1784), Ch. IV Section I - Speculation on the Doctrine of the Depravity of Human Reason

Eid and Friday Sermons
Source: Self-reformation: Breaking Bad Habits https://www.alislam.org/friday-sermon/2013-12-20.html, Friday Sermon December 20th, 2013

““You’re a wicked man.”
“Thank you. It’s taken years of diligent practice.””
Source: Culture series, Use of Weapons (1990), Chapter Eleven (p. 355).

“Habit with him was all the test of truth,
It must be right: I’ve done it from my youth.”
The Borough (1810), Letter iii, "The Vicar", line 138.

On elected politicians
1920s, Notes on Democracy (1926)