The author of this article, Lewis Lapham [1], is himself quite accomplished at 79, and founded the magazine, Lapham's Quarterly [2], which might appeal to some HN readers.
It's a testament to his thesis on Old Masters and Second Acts that you cite his founding of Lapham's Quarterly instead of him being the editor of Harper's for almost forty years.
[1]: https://en.wikipedia.org/wiki/Lewis_H._Lapham
[2]: http://www.laphamsquarterly.org/