https://archive.org/details/3-d-matrix-was-kommt-danach-5-d-oder-4-d-viktor-heidinger
https://archive.org/details/mysterium-satoshi-bitcoin-wie-alles-begann-arte
https://archive.org/details/philosophisches-gesprach-martin-heidegger-lehre-und-leere-seiner-philosophie
https://archive.org/details/marx-nietzsche-und-wagner-prof.-em.-dr.-herfried-munkler
https://archive.org/details/werner-herzog-vom-einsamen-leben-als-regisseur-sternstunde-philosophie-srf-kultur
https://archive.org/details/mystik-des-judentums-quelle-der-weisheit-george-fleischhacker
https://archive.org/details/sofies-welt-jostein-gaarder