
Speech https://www.youtube.com/watch?v=0pfEJaI2iS4 (7 February 2011)
2010s
2000s, 2009, Farewell speech to the nation (January 2009)
Context: As we address these challenges – and others we cannot foresee tonight – America must maintain our moral clarity. I have often spoken to you about good and evil. This has made some uncomfortable. But good and evil are present in this world, and between the two there can be no compromise. Murdering the innocent to advance an ideology is wrong every time, everywhere. Freeing people from oppression and despair is eternally right. This nation must continue to speak out for justice and truth. We must always be willing to act in their defense and to advance the cause of peace.
Speech https://www.youtube.com/watch?v=0pfEJaI2iS4 (7 February 2011)
2010s
As quoted in Margaret Mead : Some Personal Views (1979) edited by Rhoda Métraux
As quoted in American Quotations (1992) by Gorton Carruth and Eugene H. Ehrlich
1970s
Variant: At times it may be necessary temporarily to accept a lesser evil, but one must never label a necessary evil as good.
The extent of intercourse, and of mutual assistance, between men of science and men of practice, the practical knowledge of scientific men, and the scientific knowledge of practical men, have been for some time steadily increasing; and that combination and harmony of theoretical and practical knowledge—that skill in the application of scientific principles to practical purposes, which in former times was confined to a few remarkable individuals, now tends to become more generally diffused.
"On the Harmony of Theory and Practice in Mechanics" (Jan. 3, 1856)
Other
2000s, 2005, Second Inaugural Address (January 2005)
1870s, Fourth State of the Union Address (1872)
“Evil must not be countered with another evil but, rather, repelled by an act of goodness.”
Understanding Islam, "Morals and Ethics" http://vod.dmi.ae/media/96716/Ep_03_Morals_and_Ethics Dubai Media
The Nature of Slavery. Extract from a Lecture on Slavery, at Rochester, December 1, 1850
1850s, My Bondage and My Freedom (1855)