“People who make a difference do not die alone. Something dies in everyone who was affected by them.”
About the death of his long-time collaborator Amos Tversky on 5 June 1996. Nobel Prize Autobiographical Information http://www.nobelprize.org/nobel_prizes/economic-sciences/laureates/2002/kahneman-bio.html (2002).
Context: People who make a difference do not die alone. Something dies in everyone who was affected by them. Amos made a great deal of difference, and when he died, life was dimmed and diminished for many of us. There is less intelligence in the world. There is less wit. There are many questions that will never be answered with the same inimitable combination of depth and clarity. There are standards that will not be defended with the same mix of principle and good sense. Life has become poorer. There is a large Amos-shaped gap in the mosaic, and it will not be filled. It cannot be filled because Amos shaped his own place in the world, he shaped his life, and even his dying. And in shaping his life and his world, he changed the world and the life of many around him.
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Daniel Kahneman 51
Israeli-American psychologist 1934Related quotes
Interview in The Observer http://observer.guardian.co.uk/review/story/0,,2067715,00.html 29 April 2007

America's Drug Forum interview (1991)
Context: It's a moral problem that the government is making into criminals people, who may be doing something you and I don't approve of, but who are doing something that hurts nobody else. Most of the arrests for drugs are for possession by casual users.
Now here's somebody who wants to smoke a marijuana cigarette. If he's caught, he goes to jail. Now is that moral? Is that proper? I think it's absolutely disgraceful that our government, supposed to be our government, should be in the position of converting people who are not harming others into criminals, of destroying their lives, putting them in jail. That's the issue to me. The economic issue comes in only for explaining why it has those effects. But the economic reasons are not the reasons.
Source: Draw the Circle: The 40 Day Prayer Challenge