Anatol Rapoport, "Modern Systems Theory – An Outlook for Coping with Change", paper given in the 1970 John Umstead Distinguished Lectures at North Carolina Department of Mental Health, Research Division, on 5 February 1970, and appeared in Revue Francaise de Sociologie, October 1969, p. 16
1970s and later
“We must not turn away when we hear the cries of the hungry. We must not stand by when we see the killing and terrorizing of the innocent. We should not wait until hundreds and, in some cases, thousands of our fellow human beings have died as occurred in Afghanistan, before we act.”
Commencement Address to Boston University Class of 2005 http://www.bu.edu/news/2005/05/22/transcript-of-president-hamid-karzais-commencement-address/ (May 22, 2005)
2005
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Hamid Karzai 13
President of Afghanistan 1957Related quotes

“When we hear news, we should always wait for the sacrament of confirmation.”
Il faut toujours en fait de nouvelles attendre le sacrement de la confirmation.
Letter to Charles-Augustin Ferriol, comte d'Argental (28 August 1760]])
Citas

“When we have done our best, we should wait the result in peace.”
The Pleasures of Life, vol. 1 (1887), ch. II: The Happiness of Duty

Source: The Gendered Atom: Reflections on the Sexual Psychology of Science (1999), Ch.7 The Rape of Nature
Section 1.3
The Crosswicks Journal, A Circle of Quiet (1972)

Bk. 4, Ch. 17 (p. 45)
Translations, The Confucian Analects