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John Tyndall
(2 Aug 1820 - 4 Dec 1893)
Irish physicist who demonstrated why the sky is blue. He wrote on diverse topics, including crystals, glaciers and radiation. His studies also included spontaneous generation, the germ theory of disease and ozone.
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John Tyndall Quotes on Fact (8 quotes)
>> Click for 48 Science Quotes by John Tyndall
>> Click for John Tyndall Quotes on | Experiment | Faraday_Michael | Life | Michael Faraday | Nature | Number | Observation | Phenomenon | Power | Science | Truth | Wave |
>> Click for 48 Science Quotes by John Tyndall
>> Click for John Tyndall Quotes on | Experiment | Faraday_Michael | Life | Michael Faraday | Nature | Number | Observation | Phenomenon | Power | Science | Truth | Wave |
Every occurrence in Nature is preceded by other occurrences which are its causes, and succeeded by others which are its effects. The human mind is not satisfied with observing and studying any natural occurrence alone, but takes pleasure in connecting every natural fact with what has gone before it, and with what is to come after it.
— John Tyndall
In Forms of Water in Clouds and Rivers, Ice and Glaciers (1872), 1.
If you ask me whether science has solved, or is likely to solve, the problem of this universe, I must shake my head in doubt. We have been talking of matter and force; but whence came matter, and whence came force? You remember the first Napoleon’s question, when the savans who accompanied him to Egypt discussed in his presence the problem of the universe, and solved it to their apparent satisfaction. He looked aloft to the starry heavens, and said—“It is all very well, gentlemen, but who made all these!” That question still remains unanswered, and science makes no attempt to answer it.
— John Tyndall
Lecture 'On Matter and Force', to nearly 3,000 working men, at the Dundee Meeting of the British Association for the Advancement of Science (Sep 1867), reported in 'Dundee Meeting, 1867', Chemical News and Journal of Physical Science (Nov 1867)
It is as fatal as it is cowardly to blink facts because they are not to our taste.
— John Tyndall
From Presidential Address (1 Oct 1877), 'Science and Man', in The Eclectic Magazine of Foreign Literature, Science, and Art (Jan 1878), N.S. 27, No. 1, 75. Also in Fragments of Science (1879), Vol. 2, 362.
Newton’s passage from a falling apple to a falling moon was an act of the prepared imagination. Out of the facts of chemistry the constructive imagination of Dalton formed the atomic theory. Davy was richly endowed with the imaginative faculty, while with Faraday its exercise was incessant, preceding, accompanying and guiding all his experiments. His strength and fertility as a discoverer are to be referred in great part to the stimulus of the imagination.
— John Tyndall
In 'The Scientific Use of the Imagination', Fragments of Science: A Series of Detached Essays, Addresses, and Reviews (1892), Vol. 2, 104.
The conclusion of Science which recognizes unbroken casual connection between the past and the present would undoubtedly be that the molten earth contained within it elements of life, which grouped themselves into their present forms as the planet cooled. … The difficulty and reluctance encountered by this conception, arise solely from the fact that the theologic conception obtained a prior footing in the human mind. Did the latter depend upon reasoning alone, it could not hold its ground for an hour against its rival. * * * Were not man’s origin implicated, we should accept without a murmur the derivation of animal and vegetable life from what we call inorganic nature. The conclusion of pure intellect points this way and no other.
— John Tyndall
As quoted in 'The Origin of Life', Scientific American (25 Dec 1875), 33, No. 26, 400. The article (by an unnamed writer), having quoted Tyndall, includes a parenthetical clarification, “The context shows that by ‘elements of life,’ Professor Tyndall does not mean entities but possibilities of molecular condition by which the phenomena of life were to be evolved in the natural course of events, not by the miraculous addition of a new force but by means of the forces already in play.”
The mutton in the study gathered over it a thick blanket of Penicillium. On the 13th [December 1875] it had assumed a light brown colour as if by a faint admixture of clay; but the infusion became transparent. The ‘clay’ here was the slime of dead or dormant Bacteria, the cause of their quiescence being the blanket of Penicillium. I found no active life in this tube, while all the others swarmed with Bacteria. In every case where the mould was thick and coherent the Bacteria died, or became dormant, and fell to the bottom of the sediment … The Bacteria which manufacture a green pigment appear to be uniformly victorious in their fight with the Penicillium.
— John Tyndall
From paper read to the Royal Institution (1 Jan 1876). In 'Professor Tyndall on the Optical Deportment of the Atmosphere in Relation to Putrefaction and Infection' , Philosophical Transactions of the Royal Society of London (1876), 166, 62.
There is, however, no genius so gifted as not to need control and verification. ... [T]he brightest flashes in the world of thought are incomplete until they have been proved to have their counterparts in the world of fact. Thus the vocation of the true experimentalist may be defined as the continued exercise of spiritual insight, and its incessant correction and realisation. His experiments constitute a body, of which his purified intuitions are, as it were, the soul.
— John Tyndall
In 'Vitality', Scientific Use of the Imagination and Other Essays (1872), 43.
To him [Faraday], as to all true philosophers, the main value of a fact was its position and suggestiveness in the general sequence of scientific truth.
— John Tyndall
In Faraday as a Discoverer (1868), 84.
See also:
- 2 Aug - short biography, births, deaths and events on date of Tyndall's birth.
- John Tyndall - context of quote “Fatal…to blink facts” - Medium image (500 x 250 px)
- John Tyndall - context of quote “Fatal…to blink facts” - Large image (800 x 400 px)
- John Tyndall - context of quote “The First Experiment a Child Makes” - Medium image (500 x 250 px)
- John Tyndall - context of quote “The First Experiment a Child Makes” - Large image (800 x 400 px)
- On Matter and Force - John Tyndall’s Lecture to general public at Dublin (1867).
- A Vision of Modern Science: John Tyndall and the Role of the Scientist in Victorian Culture, by Ursula DeYoung. - book suggestion.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- 
