On the Origin of Species By Means of Natural Selection vs Autobiography of a Yogi
Both counted from their full texts, the same way, on the same day.
128words between them — 1 min of it
On the Origin of Species By Means of Natural Selection is longer — 154,905 words against 154,777 for Autobiography of a Yogi, a difference of 128 words or about 1 min of extra reading. On the Origin of Species By Means of Natural Selection is the harder read, at grade 14.4 against 9.8.
SOURCE·Project Gutenberg full texts·both editions counted the same way·REVIEWED JUL 2026
Side by side
| On the Origin of Species By Means of Natural Selection | Autobiography of a Yogi | |
|---|---|---|
| Author | Darwin, Charles | Yogananda, Paramahansa |
| Words | 154,905 | 154,777 |
| Reading time at 250 wpm | 10h 20m | 10h 19m |
| Unique words | 7,231 | 14,983 |
| Sentences | 5,323 | 8,540 |
| Average sentence length | 29.1 words | 18.1 words |
| Reading grade | 14.4 | 9.8 |
| Reading ease | 43.7 | 57.3 |
| Long words | 15.7% | 13.8% |
Highlighted cells are the larger figure — except reading ease, where higher means easier.
SOURCE·Project Gutenberg full texts·both editions, same counting rule·REVIEWED JUL 2026
How this is worked out
- Both texts are counted the same way, from the same source, with Gutenberg's header and licence footer struck first.
- The gap is stated in words and then in time at 250 words a minute — the rate is printed because a duration without one cannot be checked.
- Difficulty is compared on Flesch–Kincaid grade, which reads sentence and word length only. It cannot see irony or dialect, so treat it as a measure of surface, not of effort.
gap = |154,905 − 154,777| = 128 words 128 ÷ 250 wpm = 1 min of extra reading
The second question
Which is longer, On the Origin of Species By Means of Natural Selection or Autobiography of a Yogi?
On the Origin of Species By Means of Natural Selection is longer — 154,905 words against 154,777 for Autobiography of a Yogi, a difference of 128 words or about 1 min of extra reading. On the Origin of Species By Means of Natural Selection is the harder read, at grade 14.4 against 9.8.
Colophon
Both figures computed from Project Gutenberg plain-text editions — ebook no. 1228 and no. 7452 — and from no other source. Neither book’s text is set on this site.
SOURCE·Project Gutenberg full texts·US public domain·REVIEWED JUL 2026
Word counts and reading levels are computed from a specific public-domain edition and will differ from other editions and from other counting methods — see the method page.
