Books
As the earliest attempt to document the sky during the Warring States Period, Gan De's work possesses high scientific value. He wrote two books, the Treatise on Jupiter and the 8-volumes Treatise on Astronomical Astrology, both of which have been lost. Gan De also wrote the Astronomic star observation (天文星占, Tianwen xingzhan).
It can be seen on the quotations under Shiji (volume 27) and Hanshu (volume 26), but was preserved mostly in the Treatise on Astrology of the Kaiyuan Era.
In 1973, a similar catalogue by him and Shi Shen was uncovered in Mawangdui. It was arranged under the name of Divination of Five Planets. It records the motion of Jupiter, Saturn, Venus and other planets in their orbits between 246 BC and 177 BC.
Read more about this topic: Gan De
Famous quotes containing the word books:
“The Brahmins say that in their books there are many predictions of times in which it will rain. But press those books as strongly as you can, you can not get out of them a drop of water. So you can not get out of all the books that contain the best precepts the smallest good deed.”
—Leo Tolstoy (1828–1910)
“The society would permit no books of fiction in its collection because the town fathers believed that fiction ‘worketh abomination and maketh a lie.’”
—For the State of Rhode Island, U.S. public relief program (1935-1943)
“Of all the ways of acquiring books, writing them oneself is regarded as the most praiseworthy method.... Writers are really people who write books not because they are poor, but because they are dissatisfied with the books which they could buy but do not like.”
—Walter Benjamin (1892–1940)