Carol Loomis retired last summer after 60 years at Fortune. She continues to edit Warren Buffett's annual report.

“Writing itself makes you realize where there are holes in things. I’m never sure what I think until I see what I write. And so I believe that, even though you’re an optimist, the analysis part of you kicks in when you sit down to construct a story or a paragraph or a sentence. You think, ‘Oh, that can’t be right.’ And you have to go back, and you have to rethink it all.” 

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