The Unknown Quantity: A Book of Romance and Some Half-Told Tales cover

The Unknown Quantity: A Book of Romance and Some Half-Told Tales

by Henry Van Dyke

3.0/5
Listen Free

Free AI audiobook with natural voice. No signup required.

About This Book

The Unknown Quantity is a thought-provoking novel written by Henry Van Dyke. The book tells the story of a young man named Richard Vandermarck, who is born into a wealthy family and is expected to follow in his father's footsteps by pursuing a career in finance. However, Richard is interested in philosophy and decides to pursue his passion, much to the disappointment of his family.As he delves deeper into the world of philosophy, Richard meets a mysterious man named John Ward, who introduces him to the concept of the unknown quantity. This concept challenges Richard to question his beliefs and...

Chapters (412)(click to expand)

How to Listen

  1. 1. Click "Listen Free" above
  2. 2. The book opens in CastReader's browser reader
  3. 3. Click the play button — AI narration starts with word highlighting
  4. 4. Use "Send to Phone" to continue listening on your phone

FAQ

Is this audiobook really free?

Yes. "The Unknown Quantity: A Book of Romance and Some Half-Told Tales" is a public domain work from Project Gutenberg. CastReader converts it to audio using AI text-to-speech for free. No account or payment needed.

What does the AI voice sound like?

CastReader uses Kokoro TTS, a natural-sounding AI voice. It handles punctuation, names, and dialogue naturally. Most listeners forget it's AI after a few minutes.

Can I listen on my phone?

Yes. Open the book, then use "Send to Phone" to stream audio to your phone via Telegram. No app download needed.