Some of his books are also available as audio files, because someone has read them aloud in full or in part. In such cases, the copyright to the recording naturally lies with the producer, so for legal reasons I cannot make it available for download here, but can only provide a link.

However, there are exceptions: Some recordings are explicitly declared to be in the public domain and can therefore be downloaded here. I'm glad that there seem to be enthusiasts who appreciate his work enough to share it with the world. A big thank you to all who take the trouble to produce such recordings! I like to include such works here. But only if the recordings are not accompanied by music, because that disturbs me while listening and maybe other people as well.