{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"On the Fourfold Root of the Principle of Sufficient Reason: A Philosophical Treatise","author_name":"Arthur Schopenhauer","thumbnail_url":"https://www.ebooknetworking.net/books/151/432/big151432735X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-151432735X.html\">On the Fourfold Root of the Principle of Sufficient Reason: A Philosophical Treatise</a>","width":400,"height":300}