圜天圖說正續編
圜天圖説跋

圜天圖説跋

圜天圖説跋

青來道人清静寡欲,而于事物理趣多所窮究,得輙黙識于心,未嘗為人言,人亦無知之者。年七十矣,兀坐終日,泊如也。初,余僦居精舍,見其案無他物,惟幾何篇一冊。余曰:曰是宇宙事物數理所從出也。通其義以施於推歩,瞭然矣。爰與窮究天地日月星度經緯之學。青來不余諱,日作一圖,圖各有説,闡發確徵,積疑乃釋。自維戴髙履厚垂五十年,設貿貿以終,竟不獲明其理與其數,詎非抱憾事哉?糧儲觀盧公,故深於斯學者,余數從問難乆矣。日詣余,遂以圖説進質。公閲而深然之,謂余能不失人,而是書之必傳無疑也。復為删訂,以商于制府阮公,均各序其甲賢四所以矣。青來固欲余一言以誌相知之雅,顧何能辭?于其付梓也,為書簡末而歸之。

End of chapter

Text and scans: Shidian Guji (Peking University – ByteDance open ancient texts). Edition details are given per book. Shidian Guji

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