I actually own most of elements, in the original French and first edition! Found them on a used bookstore warehouse outside of DC for $5 each. They sell on eBay

I actually own most of elements, in the original French and first edition! Found them on a used bookstore warehouse outside of DC for $5 each. They sell on eBay pretty regularly for >$100 (you have to search the French title). I don't speak French but it's cool to have them as a collectors item