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Who really said it

A man who dares to waste one hour of time has not discovered the value of life

Written by Charles Darwin 1809–1882 · English naturalist · author of On the Origin of Species
Verified Free to reuse

This one is genuine, and it has an address and a date. Darwin wrote it to his sister Susan from Bahia, Brazil, on 4 August 1836, aboard HMS Beagle on the last leg of the voyage home. It was printed in The Life and Letters of Charles Darwin, edited by his son Francis in 1887. One honest caveat: it is not a maxim in the original. Darwin wrote it as the tail of a longer sentence — ‘I shall act as I now think—as a man who dares to waste one hour of time has not discovered the value of life’ — and the quotable version simply lops off the ‘as’ and capitalises what follows.

Last verified 2 Aug 2026 · how we verify · spot an error?

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“A man who dares to waste one hour of time has not discovered the value of life” Charles Darwin, letter to his sister Susan Darwin from Bahia, Brazil, 4 August 1836, written aboard HMS Beagle on the voyage home. Printed in The Life and Letters of Charles Darwin (1887), vol. I, ch. VI. Verbatim: “I trust one part at least will turn out true, and that I shall act as I now think—as a man who dares to waste one hour of time has not discovered the value of life.”

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In context

Evoking the world of Charles Darwin — English naturalist and geologist. Theme: "A man who dares to waste one hour of time has not discovered the value of life". Atmospheric and restrained, cinematic directional light, a muted period-appropriate palette, fine grain and texture. Compose with generous empty space for the quote and a small credit line. No lettering in the image itself.

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Provenance

The letter it comes from

Work
The Life and Letters of Charles Darwin, ed. Francis Darwin (1887)
Location
Volume I, chapter VI — ‘The Voyage’
Letter
Charles Darwin to Miss S. Darwin — Bahia, Brazil, 4 August 1836
Written
Aboard HMS Beagle, homeward bound; Darwin was 27

Both your letters were full of good news; especially the expressions which you tell me Professor Sedgwick used about my collections. I confess they are deeply gratifying—I trust one part at least will turn out true, and that I shall act as I now think—as a man who dares to waste one hour of time has not discovered the value of life. Charles Darwin to Miss S. Darwin, Bahia, Brazil, 4 August 1836

Read whole, it is not advice to anyone. It is a young man promising himself something. Darwin has just learned, by letter, that Professor Sedgwick has been praising the specimens he shipped home from South America — the first real sign that four years at sea might have made him a scientist rather than a disappointment — and the resolution is what he does with that news.

The Life and Letters of Charles Darwin, vol. I — full text

How we verified this

  • Wikiquote gives a precise citation rather than a bare name, which is always the first good sign: The Life and Letters of Charles Darwin, volume I, chapter VI, a letter to his sister Susan Elizabeth Darwin dated 4 August 1836 Wikiquote, Charles Darwin ↗.
  • We then checked it against the book itself rather than taking that on trust. Project Gutenberg carries the full 1887 text of volume I, and the sentence is there, in chapter VI (‘The Voyage’), under the heading ‘CHARLES DARWIN TO MISS S. DARWIN. Bahia, Brazil, August 4 [1836]’ — the bracketed year being the editor’s the full text of volume I ↗.
  • The wording matches, with one difference worth naming. Darwin did not write a standalone aphorism; the clause runs on from ‘I shall act as I now think—as a man who dares…’. Dropping that ‘as’ is what turned a private resolution into a motivational line. Nothing is misrepresented by the popular form, but it is an excerpt, not a sentence.
  • The occasion checks out from the same letter. Darwin is at Bahia because Captain FitzRoy had doubled back across the Atlantic to re-check his longitude measurements — Darwin calls the detour ‘very grievous’ and writes ‘I loathe, I abhor the sea and all ships which sail on it’ a few lines above. Professor Sedgwick, whose praise prompted the resolution, was the Cambridge geologist who had taken Darwin on his first field expedition, through North Wales in 1831, as the same volume records Adam Sedgwick ↗.
Public domain

Free to reuse. Darwin wrote the letter in 1836 and died in 1882; The Life and Letters of Charles Darwin was published in 1887, far earlier than the 1931 threshold for United States public domain, and Project Gutenberg distributes the full text on that basis. No modern translation or edited text is involved — the English quoted here is Darwin’s own.

Rights status is our research, not legal advice — and copyright varies by country and edition. For commercial or published use, confirm with the rightsholder. See terms.

Context

Why it mattered

Darwin was twenty-seven and nearly home. The Beagle had sailed in December 1831, and he had spent much of the time since seasick, homesick and quietly unsure whether any of it counted for anything — he had left England as a young man with an unfinished plan to become a country clergyman, and the berth was, in his own account, an offer to ‘go with him without pay as naturalist’, sharing part of the captain’s own cabin.

Then his sisters’ letters caught up with him at Ascension and Bahia, carrying the news of the expressions Professor Sedgwick had used about his collections. That is the moment this sentence belongs to: not a philosophy of productivity, but a young man who has just discovered that the work he has been doing might actually make him somebody, resolving not to squander the chance.

Not advice to anyone else. A promise a young man made to himself when he found out his work had been noticed.

What happened next

The same volume heads the voyage ‘from December 27, 1831, to October 2, 1836’; the ship reached Falmouth on that Sunday evening. Writing to Henslow from Shrewsbury on 6 October, Darwin reported that he had got home the previous morning and was ‘in the clouds, and neither know what to do or where to go’.

He kept the promise fairly literally. A letter printed a few pages earlier in the same chapter has him asking Henslow to propose him for the Geological Society, of which he later served as one of the honorary secretaries.

His own pocket book for 1837 records the next step in five words: ‘In July opened first note-book on Transmutation of Species.’ The theory those notebooks became reached print as On the Origin of Species in November 1859.

Susan Elizabeth Darwin, the sister he wrote to, stayed at the family home in Shrewsbury; the Darwin siblings were prolific correspondents, and it is largely because they kept his letters that this sentence survives at all.

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Filed under

More provenance-checked quotes on the same theme, each with its reuse status.

Time Work Purpose

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Dig deeper

Trusted places to keep pulling the thread — primary archives, fact-checks, and scholarship. We show how we used each one before you leave.

The Life and Letters of Charles Darwin, vol. Igutenberg.org

The 1887 primary source, free and complete. The letter is in chapter VI; search the text for "value of life".
Full plain text of volume Igutenberg.org

The whole volume as searchable text — the file we actually read to confirm the wording, the letter heading and the date.
Wikiquote — Charles Darwinen.wikiquote.org

Carries the line in its sourced section with the volume, chapter, recipient and date attached — unusually good practice for a quotation site.
The Life and Letters of Charles Darwin — about the booken.wikipedia.org

Background on the 1887 collection assembled by Darwin's son Francis, which is how most of the letters quoted today reached print.
Adam Sedgwicken.wikipedia.org

The Cambridge geologist whose praise prompted the resolution, and who took Darwin on his first geological fieldwork in North Wales in 1831.
The second voyage of HMS Beagleen.wikipedia.org

The 1831–1836 voyage. The letter was written on the homeward leg, after FitzRoy doubled back across the Atlantic to re-check his longitudes.

The author

About Charles Darwin

Charles Darwin

1809–1882 · English naturalist and geologist

Charles Robert Darwin was born at Shrewsbury on 12 February 1809 — a date he supplies himself in the autobiography printed at the front of this same volume. He sailed on HMS Beagle from 1831 to 1836 as a young man with no settled career, and came home with the collections and questions that produced On the Origin of Species in 1859. He was also one of the great letter-writers of the nineteenth century, which is why so much of what he thought at twenty-seven can still be dated to the day.

For writers & researchers

Cite this

The primary source (Chicago)

Darwin, Charles. Letter to Susan Elizabeth Darwin, Bahia, Brazil, 4 August 1836. In The Life and Letters of Charles Darwin, edited by Francis Darwin, vol. I, chapter VI (“The Voyage”). London: John Murray, 1887.

This verification page

Quotle.info. “Who really said ‘A man who dares to waste one hour of time has not discovered the value of life’?” Last verified 2 Aug 2026. https://quotle.info/who-said/a-man-who-dares-to-waste-one-hour-of-time-has-not/

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