"Shortly after the book was published, Connie Goldman talked with Robert Pirsig at his home in St. Paul, Minn. Pirsig discusses his process in writing the book, at times working four hours before he arrived for his day job writing technical manuals." NPR
Here you can listen to the above interview, originally broadcast by NPR on July 12, 1974, as well as find two other interviews here. I haven't got down to listening to them yet.
And here is somebody talking about The Writing Life. In his case writing novels.
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Art is anything you can do well.
Anything you can do with Quality.
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Many thanks to the person who pointed me towards these interviews. Much appreciated.