Norah Vincent, Sex, Love and Politics, id., p. 40, col. 2
“Sincerity is the most overrated virtue in the catalogue.”
Star of the Sea (p. 637)
Time Patrol
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Poul Anderson 140
American science fiction and fantasy writer 1926–2001Related quotes

“Modesty is a vastly overrated virtue.”
Interview with Lorie Conway (1997) from Interviews with John Kenneth Galbraith (2004) ed. James Ronald Stanfield and Jacqueline Bloom Stanfield. Conway saw these words on a framed needlepoint, entitled "Galbraith's First Law," at Galbraith's home

“Is sincerity a virtue by itself? A serial killer has also acted sincerely.”
Oluşmak (To Become) Aphorisms (Pan Publishing House, Istanbul, 2011)

“You rely too much on brain. The brain is the most overrated organ.”

1970's, Conversations with Samuel Beckett and Bram van Velde (1970 - 1972)

Source: Academy Series - Priscilla "Hutch" Hutchins, Deepsix (2001), Chapter 27 (p. 375)

The Analects, The Doctrine of the Mean
Context: It is only the individual possessed of the most entire sincerity that can exist under Heaven, who can adjust the great invariable relations of mankind, establish the great fundamental virtues of humanity, and know the transforming and nurturing operations of Heaven and Earth; — shall this individual have any being or anything beyond himself on which he depends? Call him man in his ideal, how earnest is he! Call him an abyss, how deep is he! Call him Heaven, how vast is he! Who can know him, but he who is indeed quick in apprehension, clear in discernment, of far-reaching intelligence, and all-embracing knowledge, possessing all Heavenly virtue?

“War is mainly a catalogue of blunders.”
On the Soviet Union’s failure to form a united Balkan front against Hitler ; in The Second World War, Volume III : The Grand Alliance (1950) Chapter 20 (The Soviet Nemesis).
Post-war years (1945–1955)