Nobel Prize acceptance speech http://www.utoronto.ca/jpolanyi/nobel_prize/, Nobel Banquet in Stockholm (1986)
“Those were men in whom great strength and knowledge served the will to evil and fed upon it. Whether the wizardry that serves a better end may always prove the stronger, we do not know. We hope.”
Source: Earthsea Books, The Farthest Shore (1972), Chapter 3, "Hort Town" (Ged)
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Ursula K. Le Guin 292
American writer 1929–2018Related quotes

Part III : Selection on Education from Kant's other Writings, Ch. I Pedagogical Fragments, # 52
The Educational Theory of Immanuel Kant (1904)

“If we do not lay out ourselves in the service of mankind whom should we serve?”
Letter to John Thaxter (29 September 1778)

“If we do not lay out ourselves in the service of mankind whom should we serve?”
Abigail Adams, his wife, in a letter to John Thaxter (1778-09-29).
Misattributed
“Better is art, than evil strength; for with art men may hold what strength may not obtain.”
Source: Brut, Line 8590; vol. 2, p. 297.

“Wisdom we know is the knowledge of good and evil not the strength to choose between the two.”
The Late Forties and the Fifties, 1956 entry.
The Journals of John Cheever (1991)

Mémoires pour servir à l'histoire de Port-Royal (1752), as cited by M. A. Screech in Laughter at the Foot of the Cross (1997), p. 69

"The Contribution of an Independent Judiciary to Civilization" (1942).
Extra-judicial writings
Justice Young leaving Michigan Supreme Court for Detroit law firm job http://www.freep.com/story/news/local/michigan/2017/03/29/justice-young-leaving-michigan-supreme-court-detroit-law-firm-job/99772568/ (March 29, 2017)