“Few are those who wish to be endowed with virtue rather than to seem so.”
Section 98
See also Esse quam videri
Source: Laelius De Amicitia – Laelius On Friendship (44 BC)
Original
Virtute enim ipsa non tam multi praediti esse quam videri volunt.
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Marcus Tullius Cicero 180
Roman philosopher and statesman -106–-43 BCRelated quotes

The Way of God's Will Chapter 1-8. Kingdom of Heaven http://www.unification.org/ucbooks/WofGW/wogw1-08.htm Translated 1980.

“Those who wish to appear wise among fools, among the wise seem foolish.”
Qui stultis videri eruditi volunt stulti eruditis videntur.
Book X, Chapter VII, 21
See also: An X among Ys, a Y among Xs
De Institutione Oratoria (c. 95 AD)

Source: In a letter to Chuck Schumer and Nancy Pelosi " Meghan, Duchess of Sussex, urges Schumer and Pelosi to pass federal paid family leave https://www.cnn.com/2021/10/21/politics/meghan-duchess-of-sussex-paid-family-leave/index.html" (October 21, 2021)

Letter to Ottoline Morrell, 17 December, 1920
1920s

Kitab al-Akhlaq wa’l Siyar ; Trsltd by N. Tomiche under the title: Epitre Morale, Collection UNESCO, Beyrouth, 1961, p. 21.

“People who have no vices, have very few virtues.”
According to The Inner Life of Abraham Lincoln (1867) by F. B. Carpenter, Lincoln quoted this as having been said to him by a fellow-passenger in a stagecoach. See also "Washington during the War", Macmillan's Magazine 6:24 http://books.google.com/books?id=rB4AAAAAYAAJ&pg=PA24&dq=folks (May 1862)
Posthumous attributions
Variant: It's my experience that folks who have no vices have generally very few virtues.

Question http://hansard.millbanksystems.com/commons/1985/nov/27/anglo-irish-agreement in the House of Commons (27 November 1985) on the Anglo-Irish Agreement.
1980s

“There are few people who are more often wrong than those who cannot suffer being wrong.”
Il n'y a point de gens qui aient plus souvent tort que ceux qui ne peuvent souffrir d'en avoir.
Maxim 386.
Reflections; or Sentences and Moral Maxims (1665–1678)