Doctrines of Heathen Philosophy, Joseph Priestlyby Joseph Priestly
PRIESTLEY, JOSEPH. The Doctrines of Heathen Philosophy, compared with
those of Revelation. By Joseph Priestly, L.L.D. F.R.S. Northumberland:
Printed by John Binns. 1804. [Copy-right secured] Octavo. Joseph Priestley
(1773-1804) Presbyterian and then Unitarian minister and scientist.
THIS WORK WAS WRITTEN AT THE INSTANCE OF HIS FRIEND THOMAS JEFFERSON.
As Plato's account of a future state has such a mixture of fancy and
fable, and so little support from argument, his declaration of his belief
of it will admit of much doubt, as well as what he says of the immortality
of the soul in general.
How happy, then, should we think ourselves, and thankful to God, for the
glorious light of the gospel, which leaves us under no doubt or
uncertainty with respect to a future life in general; or the different
conditions of the righteous and the wicked in it;
We find nothing in our scriptures concerning the fanciful doctrine of
pre-existence, or of the state of souls separate from the body; but are
assured that as the man dies, the whole man shall rise again, with a
perfect recollection of all that he had done, and therefore satisfied with
respect to the state to which he will be sentenced corresponding to it.
JOSEPH PRIESTLEYThe great men of science of today stand on the shoulders of giants. Joseph Priestley was one such intellectual "giant" whose works laid the foundation for that branch of science which we now call Chemistry. Although Priestley is best known for his experiments with gases especially that which we now call oxygen, he was extraordinarily prolific in his writings on other areas of intellectual endeavors. He had important contributions in the fields of education, moral philosophy, theology, metaphysics, political economy, history and physical science.
Joseph Priestley was born at Fieldhead, in the parish of Birstal, not far from Leeds, in the northern English county of Yorkshire, on March 13, 1733 according to the Old Style Calendar, the Gregorian calendar not coming into use until 1751, after which he celebrated on March 24. He was the oldest of the six children - four sons and two daughters - of Jonas Priestley, a dresser and finisher of cloth and Mary Swift, a farmer's daughter.
During his boyhood, Joseph went to the local schools where he learned Greek and Latin at an early age, and during school holidays, Hebrew. In his mid teens he fell seriously ill with tuberculosis of the lungs, was forced to drop out of school, and for a time abandoned his plan of entering the ministry. As he gathered strength after his illness, he taught himself French, Italian, and German and learned Chaldean, Syrian and Arabic. Privately, he also learned the rudiments of geometry, algebra and mathematics.
Soon he was ready to pursue the goal of his boyhood, the ministry. By this time, however, he had started to question some of the orthodox tenets of the Calvinist faith. He decided not to go to the Academy at Mile End, where he would have been required to profess his loyalty every six months to ten printed articles of the faith. He went instead to the more liberal Daventry Academy.
At this time, Dissenting Academies became the center of liberal education since the doors of the great universities were closed to believers of nonconformist doctrines. The academy at Daventry offered Joseph the opportunity of learning the traditional subjects as well as natural and experimental philosophy. It was here that his interest in natural phenomena and experimentation was encouraged. But his dominant inclination was still towards theology. After Daventry, Priestley accepted his first position with a poor congregation at Needham Market in Suffolk where he remained for three years.
His success as a teacher in Nantwich opened the door to a post as tutor in "polite" and classical languages at a new Dissenting Academy in Warrington where he spent six happy years.
For the first time since his academic days, he found himself in sympathetic surroundings. His colleagues held the same opinions and shared the same ideals with him. If disagreement arose on any point, they looked on controversy as a means of discovering the truth, and not as a sign of moral reprobation. (3)
It was there in 1762 that Priestley married Mary Wilkinson, daughter of John Wilkinson, one of the leading figures of the emerging Industrial Revolution in England. He described his marriage as
a very suitable and happy connexion, my wife being a woman of an excellent understanding, much improved by reading, of great fortitude and strength of mind, and of a temper in the highest degree affectionate and generous; feeling strongly for others, and little for herself. (6)A month before his wedding, in anticipation of impending financial obligations, he applied for and was conferred ordination to the Dissenting ministry. His lectures on History and General Policy were his most important work while at Warrington. Through his lectures he attempted to introduce his students to wider realms. He expected his students to become familiar with political theory, laws, grammar, oratory and criticism. He acquainted them with Shakespeare, Milton, and other writers and poets of that time.
During his annual month-long visits to London, he joined the company of men who were known for their liberal politics and their rational dissent. Foremost among these were Richard Price, whose pamphlet, Civil Liberty, is said to have influenced the Declaration of Independence of the American Colonies, and Benjamin Franklin, whose friendship was crucial to his emerging scientific career.
Soon after, confronted with the obligations of a growing family, he decided to accept the invitation to minister to the concregation at Mill Hill. In 1767, he moved his family to Mill Chapel in Leeds, close to his birthplace.
Joseph Priestley is best known as the discoverer of oxygen. Perhaps a more appropriate description of this accomplishment would be to credit Priestley with the isolation of dephlogisticated air. Our thorough understanding today of the chemical reactivity of oxygen comes from Antoine Lavoisier's systematic theory of combustion.
Priestley's work on electricity is eclipsed by his memorable experiments on air, which began in 1767 and peaked in 1774. The proximity of his house to a public brewery set the stage for many experiments on fixed air (carbon dioxide). Access to an abundant source of fixed air eventually led to an understanding of the nature of the effervescence found in mineral waters such as those of Spa, a resort in Belgium.
Experiments on air in the eighteenth century posed challenges to the natural philosopher. Today we unhesitatingly regard air as a solution of gases and confidently understand the chemical and physical properties that distinguish one colorless gas from another. However, centuries ago there was considerable confusion.
The injury which is continually done to the atmosphere by the respiration of such a large number of animals...is, in part at least, repaired by the vegetable creation. (5)
This balance between animal and plant kingdoms is particularly relevant to our present environmental concerns over global warming and rainforest destruction.
Joseph Priestley simplified experimental techniques for the preparation and collection of gases. His pneumatic trough of 1772 was an admirable apparatus. Gases soluble in water, previously difficult to collect, were collected successfully over mercury. In Wiltshire, England, on August 1, 1774 Priestley focused sunlight through a lens in order to heat a sample of mercuric oxide (red calx). The resulting gas supported the burning of a candle with a vigorous flame, was essentially insoluble in water, and accommodated a mouse under glass for some time. In Priestley's own words,
I have discovered an air five or six times as good as common air. (5)
This "good" air, which accounted for about twenty per cent of atmospheric air, he named dephlogisticated air. In addition, he concluded that calcination imparted to a metal the ability to take this "good" air from the atmosphere. In 1874, one hundred years after this prominent experimental contribution to chemistry, Joseph Priestley was honored by a meeting which led to the founding of the American Chemical Society in 1876.
From Leeds, he had wanted to accompany Captain Cook, as a naturalist, on his second voyage. He was refused because of objections to his religious opinions. He subsequently accepted a position with William Petty, Earl of Shelburne as librarian and tutor to his sons. He was offered a generous compensation which provided for protection in case of his patron's death or of a separation, the use of a house at Calne, the Shelburne residence at Wiltshire during the summers, and as intellectual-in-residence, freedom and resources to engage in his many interests.
Priestley accompanied Lord Shelburne on a tour of the continent. In Paris he met other members of the scientific world. With Lavoisier he spoke of his recent isolation of the gas from the red oxide of mercury, unaware of the importance of his discovery. This was the missing clue from which Lavoisier developed the grand conceptual scheme of the role of oxygen in burning, leading to the overthrow of the phlogiston theory and the revolutionizing of the whole science of chemistry.
Priestley withdrew from his position with Lord Shelburne amicably, with an annuity secure for the rest of his life. Wishing to resume his active ministry he settled at Fairhill, on the outskirts of Birmingham with his family, which now included three sons and a daughter. Among his benefactors were his brother-in-law John Wilkinson, who provided a house for his family, and Josiah Wedgwood, master potter, who supplied him with the funds he needed for his experiments.
When Priestley arrived in Birmingham in the autumn of 1780, he joined the Lunar society which met at the home of James Keir. The Lunar Society was an informal group of a dozen or so men, sometimes referred to as the "Lunatics", who were interested in natural science and literature. Benjamin Franklin was a frequent guest. The society met once a month in one another's houses on the Monday nearest the full moon. This time was chosen so that the members could return to their homes by moonlight. These meetings were described in a note Darwin wrote to Boulton.
. . . what inventions, what wit, what rhetoric, metaphysical, mechanical, and pyrotechnical, will be on the wing, bandied like a shuttlecock from one to another of your troop of philosophers! (1)Among his accomplishments during his years in Birmingham were the publication of the first part of Letters to a Philosophical Unbeliever, an attempt to defend natural religion against the skepticism of David Hume; a History of the Corruptions of Christianity, a direct attack on the central tenets of orthodox religion, particularly the doctrine of the Trinity; and a History of the Early Opinions Concerning Jesus Christ, where he set out to prove that the doctrine of the Trinity was not according to Scripture.
These three works catalyzed storms of controversy. Priestley was attacked in pamphlets and periodicals, denounced in pulpits and in the House of Commons, and considered as an agent of the Devil because of his unorthodox views.
Under the Test and Corporation Acts in England, the Dissenter was deprived of the rights of citizenship, and , by law, the Unitarian was not even tolerated. When the French Revolution broke out, the sympathies of the Dissenters lay with those who were strugggling under the yoke of corruption, tyranny and opression. Two years later, festivities were planned to celebrate the auspicious event. On the 11th of July, 1791 a local newspaper printed an advertisement for a dinner to be held at a leading hotel on July 14,
to commemorate the auspicious day (Bastille Day) which witnessed the Emancipation of Twenty-six Millions of People from the yoke of Despotism . . .(1)The dinner was attended by eighty one men and ended without incident. Dr. Priestley had declined to attend, to the disappointment of the crowd that had gathered to demonstrate their contrary views to Priestley's revolutionary and heretical writings. By evening, the crowd reconvened and, fueled by liquor, sacked and burned the New Meetinghouse where Priestley preached. The Old Meetinghouse was sacked and burned, too. Warned of the murderous multitude, Priestley and his wife left Fairhill, with nothing more than the clothes we happened to have on.
They did not realize the magnitude of the danger they were in and stopped at a friend's house a mile away. There they received information that the mob was now at their house looking for them. They moved again a little farther away but not far enough for Priestley to be spared the sight of the holocaust that engulfed his home, his laboratory and especially his library which contained precious manuscripts of works, some of which were as yet unpublished.
Priestley fled to London and was never to return to Birmingham. He moved to Tottenham and then to Hackney. During the following months, Priestley was verbally attacked in the House of Commons, burned in effigy, portrayed in caricatures, denounced in pulpits and subjected to threatening letters. Priestley had by now become an honorary citizen of France which was at war with England.
While the Priestleys were on their journey to America, Laviosier met his death at the guillotine in the Place de la Revolution. The Priestleys landed in New York and proceeded to the capital, Philadelphia. He refused the offer of a chair in chemistry at the University of Pennsylvania, choosing instead to join his son, Joseph, and friend, Thomas Cooper, who were establishing a colony for English Dissenters in central Pennsylvania.
Joseph Priestley missed his circle of friends and decided to spend the winter months in Philadelphia. As the founder of the first Unitarian church in America, his sermons were attended by then Vice President John Adams and other luminaries. When Adams became president, Priestley sided with the Jeffersonian opposition. Jefferson greatly admired Priestley and even consulted him for advice on the curriculum for the University of Virginia which he was planning to found. It was in Philadelphia, during Jeffereson's term, in 1801, that he suffered his first serious illness and nearly died.
During his last journey to Philadelphia he was honored by the Americal Philosophical Society in a testimonial dinner. He offered a benediction to his scientific colleagues in a manner that turned prophetic.
Having been obliged to leave a country which has been long distinguished by discoveries in science, I think myself happy by my reception in another which is following its example, and which already affords a prospect of its arriving at equal eminence. (7)Although he never fully recovered his health, he continued work on his latest manuscript even when he could no longer rise to dress and shave himself. On February 5, 1804, he had all the children brought to his bedside, and after prayers spoke to each of them separately. He exhorted them all to continue to love each other .
. . . I am going to sleep as well as you: for death is only a good long sleep in the grave, and we shall meet again. (6)The next morning, he asked his son and Mr. Cooper to bring him the pamphlets they had been working on and dictated clearly and distinctly the additions and alterations he wished to have made. He objected to Mr. Cooper's putting the corrections in his own language. He then repeated over again what he had said before and when done he said
That is right; I have now done. (6)Half an hour later he was dead. He had put his hand to his face to prevent his son and his wife from observing his quiet departure. The date was February 6, 1804.
BIBLIOGRAPHY1. K. S. Davis, The Cautionary Scientists, G. P. Putnam's Sons, New York, New York, 1966.
2. R.E. Schofield, Joseph Priestley, Dictionary of Scientific Biography, C. C. Gillispie, Editor-in-chief, Vol XI, Scribner Publications, New York, New York, 1975, pp. 139-147.
3. A. Holt, A Life of Joseph Priestley, Oxford University Press, London, England, 1931.
4. A. J. Ihde, The Development of Modern Chemistry, Dover Publications, Inc., New York, New York, 1984, pp. 40-50.
5. J. R. Partington, A Short History of Chemistry, 3rd ed., Dover Publications, Inc., New York, New York, 1989, pp. 110-121.
6. J. Priestley, Autobiography of Joseph Priestley with an introduction by J. Lindsay, Associated University Presses, Cranbury, New Jersey, 1970.
7. D.J. Rhees, Joseph Priestley, Enlightened Chemist, American Chemical Society, Center for History of Chemistry, Publication No. 1, 1983.
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