Comment by Insanity

I guess watching the film ('free solo' is the one you mention) is the lowest effort way of getting his perspective and I recommend the film.

For a deeper dive, the book "Alone on the wall" is a good read and I recommend it. https://www.goodreads.com/book/show/36531127-alone-on-the-wa..., although that said the book might be less appealing to someone who 'knows nothing about climbing' and is more of a time investment than the short documentary :)