“I had long wished for some opportunity of endeavouring to explain… the principles on which the instruments of an Observatory are constructed, (omitting all details, so far as they are merely subsidiary,) and the principles on which the observations made with these instruments are treated…
Such an opportunity appeared to present itself in the course of Lectures which I engaged to give to the Members of the Ipswich Museum and their friends.”

Introduction
Popular Astronomy: A Series of Lectures Delivered at Ipswich (1868)

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George Biddell Airy13

English mathematician and astronomer 1801–1892

Hermann Bondi (1919–2005) British mathematician and cosmologist

Hermann Bondi, Assumption and Myth in Physical Theory, (1967) p. v

“Sir,
Having long deferred to make any report relating to the observations that were taken at sea by captain Campbell, in the year 1757, which you transmitted to me by order of the lords of the admiralty, I think it necessary to acquaint you, that, upon examining those observations, I perceived that they were not in all respects accompanied with such circumstances as are requisite for forming a right judgment of the accuracy and certainty with which observations proper for finding the longitude at sea by the moon can in fact be taken; for which reason I delayed giving my opinion upon this point till I could have an opportunity of comparing a greater variety of observations, made at different times, and with different instruments: such an opportunity having lately been given me by captain Campbell, who has favoured me with a copy of several observations that were made by him in 1758 and 1759, I now beg leave to lay before their lordships the result of the comparisons which I have made.”

James Bradley (1693–1762) English astronomer; Astronomer Royal

Miscellaneous Works and Correspondence (1832), To Mr. Cleveland Secretary of the Admiralty (April 14, 1760)

“No, nothing short of the creative principle of imagination gives the fine arts their specific quality—the principle that creates for the sake of creating, for the sake of giving free course to that imagination which is not only an essential but the guiding factor in the supersensible being of man, and which not only founds for him the world of religion and of science, as well as that of art, but is the constructive and developing principle of the universe itself.”

George Holmes Howison (1834–1916) American philosopher

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), The Art-Principle as Represented in Poetry, p.206