On the Fourfold Root of the Principle of Sufficient Reason: Audiobook
According to The Books Insider's catalog data, the On the Fourfold Root of the Principle of Sufficient Reason audiobook runs 6.8 hours unabridged, narrated by Leighton Pugh (about 4.5 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 6.8 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 14 days |
| 1 hour / day | 7 days |
| 2 hours / day | 4 days |
| 1 hour / day at 1.5× | 5 days |
You'll finish in – by –
Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.
What our data says
- At 6.8 hours, it runs longer than 63% of the 4,248 Lessons in Philosophy audiobooks in our catalog.
More narrated by Leighton Pugh
Leighton Pugh narrates 210 unabridged audiobooks in our catalog, 2,436 hours in all.
About as long, on the Lessons in Philosophy shelf
385 Lessons in Philosophy audiobooks in our catalog run within 10% of this length. The most popular on the store:
- The Courage to Be Disliked: How to Free Yourself, Change Your Life, and Achieve Real Happiness
- How to Destroy America in Three Easy Steps
- Stillness is the Key
- Greek Philosophy 101: Surprising Insights from Ancient Wisdom
- The Authoritarian Moment: How the Left Weaponized America's Institutions Against Dissent
Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.
About this listen
On the Fourfold Root of the Principle of Sufficient Reason is an audiobook by Arthur Schopenhauer: a 6.8-hour unabridged recording, read by Leighton Pugh, released November 2, 2018, on the Lessons in Philosophy shelf.
The listen at a glance
- Length
- 6.8 hrs
- Narrated by
- Leighton Pugh
- Released
- November 2, 2018
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Lessons in Philosophy
- ISBN
- 9781004133550
How to listen to On the Fourfold Root of the Principle of Sufficient Reason free
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Start listening freeQuestions listeners ask
How long is the On the Fourfold Root of the Principle of Sufficient Reason audiobook?
On the Fourfold Root of the Principle of Sufficient Reason runs 6.8 hours unabridged. At 1.5× speed that drops to roughly 4.5 hours.
Is the On the Fourfold Root of the Principle of Sufficient Reason audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates On the Fourfold Root of the Principle of Sufficient Reason?
On the Fourfold Root of the Principle of Sufficient Reason is narrated by Leighton Pugh.