“I usually learn more from the situations I hate than the ones I love.”
Source: She's Come Undone
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Wally Lamb 38
american novelist 1950
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“I do feel one learns more from one's failures than from one's successes”
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1990s, Long Walk to Freedom (1995)

https://twitter.com/BarackObama/status/896523357272911872 Speaking via twitter on August 13, 2017 in response to the 2017 Unite the Right rally in harlottesville, Virginia and quoting Nelson Mandela. Archived via Wayback Machine on August 14, 2017 https://web.archive.org/web/20170814133749/https:/twitter.com/BarackObama/status/896523357272911872. Source: Bipartisan condemnation for 'Unite the Right' rally by CNN's Jennifer Hansler on August 13, 2017 http://edition.cnn.com/2017/08/12/politics/parties-condemn-white-nationalist-rally/index.html. Archived via Wayback Machine on August 14, 2017 https://web.archive.org/web/20170814134330/http://edition.cnn.com/2017/08/12/politics/parties-condemn-white-nationalist-rally/index.html.
2017
Variant: Madiba reminds us that: “No one is born hating another person because of the color of his skin, or his background, or his religion. People must learn to hate, and if they can learn to hate, they can be taught to love, for love comes more naturally to the human heart.”
“I learn more from books than from people”
Source: The Beasties

Blissed Out: The Raptures of Rock, by Simon Reynolds (1988)
Love and relationships

Précis of The Modularity of Mind, 1985.
Modularity of Mind (1983)