“I was a changed man when i got out last time, I learned ... I learned ... I learned my lesson well ...”
Source: Diane Sawyer interview (ABC, 1993)
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Charles Manson 53
American criminal and musician 1934–2017Related quotes

“I ain't got time to learn. I can work like mans now.”
Book 1, Ch. 17
My Antonia (1918)

“That was another lesson I had learned perhaps too well: people meant pain.”
Source: The Name of the Wind

said in an interview quoted by Javier C. Hernandez of The New York Times http://www.nytimes.com/2013/10/14/nyregion/from-his-fathers-decline-de-blasio-learned-what-not-to-do.html.
“The hardest lesson that I learned is that “rejection is protection.””
Rejection never feels good, but as artists I think we tend to take rejection so personally. It can cause us to doubt our work or talent. However, rejection isn’t always someone saying we don’t like your work or you’re not talented. Sometimes it’s someone else recognizing that they can’t give you what you need to fly. It’s a venue saying this is not quite the right fit for you right now. That doesn’t mean that you won’t find home for your work. That doesn’t mean that venue won’t come looking for you one day. It means you have to keep working hard until you find the perfect fit and when the time is right it will work itself out.
On learning to take rejection in “Q&A Session with Award-Winning Author, Sheri Booker” https://www.huffpost.com/entry/interview-with-award-winning-author-sheri-booker_b_5684760 in HuffPost (2014 Aug 19)

sic
Lustmord: The Writings and Artifacts of Murderers, p. 174, (1997), Brian King, ed. ISBN 096503240X

“I learned to walk as a baby and I haven't had a lesson since.”

“It was a lesson that I would learn in time though it wasn't Hegbert who taught me.”
Source: A Walk to Remember

“I learned: the first lesson of my life: nobody can face the world with his eyes open all the time.”
Source: Midnight's Children