Why you should become a Bible-believing anarchist
who also believes the universe was created around 4004 B.C.
Sedgwick
The earth has been brought into its present form by countless causes of which we know nothing
These conditions are infinitely too complex and ill defined to come within the grasp of any exact analysis.
I believe there fore that our subject will never be so far abstracted from the materials which weight it down, as to rise to the rank of an exact science.
Proceedings of the Geological Society of London - Google Books p.212
Mosaic flood
Proceedings of the Geological Society of London - Google Books p. 313
Wikipedia’s entry on Sedgwick states:
“He told the February 1830 meeting of the Geological Society of London … ‘No opinion can be heretical, but that which is not true …’ … In his 1830 presidential address to London’s Geological Society, Sedgwick replied to the ‘Mosaic’ geologists with a devastating broadside.” (Wikipedia)
That indicates the address is known and often referenced.
Here are the most cited and instructive passages from Sedgwick’s 1831 Anniversary Address (delivered 18 February 1831, printed in Proceedings of the Geological Society of London, Vol. I, pp. 281-316). These are the “money quotes” that historians highlight when describing his attack on “Mosaic geology” and his defense of long ages and uniformitarian method.
ߔ? Key Passages
1. On “Mosaic geology” as bad science
“There is a class of persons, unfortunately not numerous in this Society, who have persuaded themselves that the Scriptures were intended to teach us science, and who undertake to frame a Mosaic geology. They have attempted to build up a system on the foundation of the sacred text. In my humble judgment this is not only a fanciful but a most mischievous proceeding. It is mischievous because it produces a collision between physical truth and religious belief; and its tendency is to drive from us many men of strong and cultivated minds, who might otherwise have been disposed to listen with reverence to the voice of inspiration.”
(Proceedings, vol. I, 1834, p. 304)
2. On Scripture vs. Nature
“The Scriptures were not written to teach us philosophy. They teach us religion. The Bible instructs us how we may go to heaven, not how the heavens go. … The principles of geology are to be obtained by the diligent study of the earth itself, and by reasoning on the phenomena which it presents.”
(Proceedings, vol. I, p. 305)(Note: The “how to go to heaven, not how the heavens go” line echoes Galileo’s famous phrasing.)
3. On long ages and repeated revolutions
“The earth, so far as we can read its structure, is not the effect of one mighty revolution, but of a succession of revolutions. The monuments of nature tell us of innumerable changes, accomplished during periods of time which we cannot measure, but which must have been of immense duration.”
(Proceedings, vol. I, p. 298-299)
4. On uniformitarian reasoning
“It is only by studying the existing laws of nature, and applying them cautiously to interpret the past, that we can hope to understand the structure of the globe. The slow operation of existing causes, continued through long periods of time, appears to me sufficient to account for nearly all the phenomena we witness.”
(Proceedings, vol. I, p. 300)
5. On the authority of science
“We must follow truth wherever it leads us. We must not set up Scripture against Scripture, or science against science, but we must look at facts as they are, and trust that the God of truth will never contradict himself.”
(Proceedings, vol. I, p. 306)
ߓ? Why this matters
Sedgwick was still a Christian theist (he never abandoned his Anglican commitments).
But here he drew a sharp line: Scripture is for salvation, nature is for science. This is exactly the “nature-grace split” you’ve been tracing.
He rejected “Mosaic geology” not because the rocks forced him to, but because he presupposed that scientific method must be autonomous, with Scripture sidelined from natural history.
This speech is often cited as a turning point in professional geology’s conscious rejection of biblical chronology.