Johannes Hevelius

Definition and stakes

Portrait of John Louis Emil Dreyer John Louis Emil Dreyer,  1911 Encyclopædia Britannica (1911)

“ We still find a large private observatory in the middle of the 17th century, that of Johannes Hevelius at Danzig, but the foundation of the royal observatories at Paris and Greenwich and of numerous university observatories shows how rapidly the importance of observations had become recognized by governments and public bodies, and it is not until within the last hundred and thirty years that the development of various new branches of astronomy has enabled private observers to compete with public institutions. ”
Source: Wikisource

Portrait of Agnes Mary Clerke Agnes Mary Clerke,  1911 Encyclopædia Britannica, Volume 13… (1911)

“ HEVELIUS [Hevel or Höwelcke] , JOHANN (1611–1687) , German astronomer, was born at Danzig on the 28th of January 1611. He studied jurisprudence at Leiden in 1630; travelled in England and France; and in 1634 settled in his native town as a brewer and town councillor. From 1639 his chief interest became centred in astronomy, though he took, throughout his life, a leading part in municipal affairs. In 1641 he built an observatory in his house, provided with a splendid instrumental outfit, including ultimately a tubeless telescope of 150 ft. focal length, constructed by himself. ”
Source: Wikisource

Portrait of Giacomo Casanova Giacomo Casanova,  The Memoirs of Jacques Casanova de Seingalt…

“ He preferred a quiet life to his honour and his philosophy. His wife had a nobler soul than he, as she wanted to sell all they had, and to take refuge in Holland rather than submit to the shame of a recantation. Perhaps Helvetius would have followed the noble advice of his wife if he had foreseen that this monstrous recantation would make his book into a fraud; for he had to confess that he had written without due reflection, that he was more in jest than earnest, and that his arguments were mere sophisms. ”
Source: Gutenberg

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