First Principles: Audiobook
According to The Books Insider's catalog data, the First Principles audiobook runs 21.2 hours unabridged, narrated by Mike Rogers (about 14.1 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 21.2 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 43 days |
| 1 hour / day | 22 days |
| 2 hours / day | 11 days |
| 1 hour / day at 1.5× | 15 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 21.2 hours, it runs longer than 98% of the 4,248 Lessons in Philosophy audiobooks in our catalog.
More narrated by Mike Rogers
Mike Rogers narrates 49 unabridged audiobooks in our catalog, 477 hours in all.
About as long, on the Lessons in Philosophy shelf
60 Lessons in Philosophy audiobooks in our catalog run within 10% of this length. The most popular on the store:
- The Fabric of the Cosmos: Space, Time and the Texture of Reality
- Enlightenment Now: The Case for Reason, Science, Humanism, and Progress
- Objectivism: The Philosophy of Ayn Rand
- The Story of Philosophy: The Lives and Opinions of the Greater Philosophers
- Signature in the Cell: DNA and the Evidence for Intelligent Design
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
First Principles is an audiobook by Herbert Spencer: a 21.2-hour unabridged recording, read by Mike Rogers, released September 28, 2023, on the Lessons in Philosophy shelf.
The listen at a glance
- Length
- 21.2 hrs
- Narrated by
- Mike Rogers
- Released
- September 28, 2023
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Lessons in Philosophy
- ISBN
- 9781004141364
How to listen to First Principles free
New members at audiobooks.com get three free audiobooks with the trial.
Separately, the store's catalog carries more than 10,000 audiobooks that are always free to stream.
Start listening freeQuestions listeners ask
How long is the First Principles audiobook?
First Principles runs 21.2 hours unabridged. At 1.5× speed that drops to roughly 14.1 hours.
Is the First Principles audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates First Principles?
First Principles is narrated by Mike Rogers.
Is First Principles worth listening to at 1.5× speed?
At 1.5× you'd finish in about 14.1 hours, saving 7.1 hours.