The Art of Madness
theparisreview.org
theparisreview.org
Or you can watch the documentary https://www.youtube.com/watch?v=sRlvDKcDvsI, although I didn't find it do too much justice to him or his work.
https://www.artbrut.ch/en_GB/authors/the-collection-de-l-art...
https://en.wikipedia.org/wiki/Unnatural_History_III
I seem to remember reading that he suffered from schizophrenia, and had a habit of burying is art in his backyard so it would grow.
But now I think this should be considered a piece of art.
I could totally see a video of TempleOS being projected on a screen in some Museum of Modern Art. It would be very fitting.
Of course, it'll probably take them another 50 years to take any notice of it, and for it to be accepted by them as "art".
The collection itself can be viewed in Heidelberg and is worth a visit if one is nearby.