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From the dawn of exact knowledge to the present day, observation, experiment, and speculation have gone hand in hand; and, whenever science has halted or strayed from the right path, it has been, either because its votaries have been content with mere unverified or unverifiable speculation (and this is the commonest case, because observation and experiment are hard work, while speculation is amusing); or it has been, because the accumulation of details of observation has for a time excluded speculation.

From the dawn of exact knowledge to the present day, observation, experiment, and speculation have gone hand in hand; and, whenever science has halted or strayed from the right path, it has been, either because its votaries have been content with mere unverified or unverifiable speculation (and this is the commonest case, because observation and experiment are hard work, while speculation is amusing); or it has been, because the accumulation of details of observation has for a time excluded speculation.

Approximate author period: c. 1860 AD · industrial

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Attribution & collection notes
Author or tradition
Thomas Henry Huxley
Attribution: attributed
Country attributed
Not established
A country attribution does not establish the earliest origin.
Historical period
Approximate author period: c. 1860 AD · industrial
Approximate period for the recorded attribution to Thomas Henry Huxley, based on documented lifetime 1825 to 1895. Source: https://www.wikidata.org/wiki/Q184366 (checked 2026-10-08). This is not a quotation composition date or independent authentication of its attribution. Source: https://www.wikidata.org/wiki/Q184366 (accessed 2026-10-08).
An author lifetime, approximate period or collection date is not necessarily the date when these words were first written or spoken.
Recorded source
Contributor-provided quotation collection

Supplied reference C; CSV row 45704; supplied attribution, independently unverified

A collection's publication date can be later than the words it records.