Seo Gyeong-deok (18 March 1489 – 13 August 1546) was a Korean Neo-Confucianist philosopher during the Joseon Dynasty. His philosophy studied materialism and phenomenology based on ancient taoist philosophy theories absorbed by neoconfucianism, like Yin and Yang and Ki.
Family
Father - Seo Ho-beon (서호번, 徐好蕃) Grandfather - Seo Sun-gyeong (서순경, 徐順卿) Great-Grandfather - Seo Deuk-bu (서득부, 徐得富) Mother - Lady Han of the Boan Han clan (보안 한씨, 保安 韓氏) Sibling(s) Younger brother - Seo Sung-deok (서숭덕, 徐崇德) Wives and their issue Lady Yi of the Taein Yi clan (태안 이씨, 泰安 李氏); daughter Yi Gye-jong (이계종; ? - 7 January 1561) Son - Seo Eung-ga (서응가, 徐應暇) Son - Seo Eung-gi (서응기, 徐應麒) Grandson - Seo Woo-shin (서우신, 徐佑申) Granddaughter - Lady Seo of the Dangseong Seo clan (당성 서씨) Grandson-in-law - Im Ryeon (임련, 任鍊) Granddaughter - Lady Seo of the Dangseong Seo clan (당성 서씨) Grandson-in-law - Yi Eung-jo (이응조, 李應祚) Granddaughter - Lady Seo of the Dangseong Seo clan (당성 서씨) Granddaughter - Lady Seo of the Dangseong Seo clan (당성 서씨) Daughter - Lady Seo of the Dangseong Seo clan (당성 서씨) Son-in-law - Yu Gyeong-dam (유경담, 柳景湛) Grandson - Yu Ik (유익, 柳益) Granddaughter - Lady Yu (유씨) Grandson-in-law - Yun Bok (윤복, 尹福) Granddaughter - Lady Yu (유씨) Grandson-in-law - Kang Ho-seon (강호선, 康好善) Unnamed concubine Son - Seo Eung-bong (서응봉, 徐應鳳) Grandson - Seo Chun-hak (서춘학, 徐春鶴) Grandson - Seo Woon-hak (서운학, 徐雲鶴) Son - Seo Eung-gu (서응구, 徐應龜)
Works
Seo was a great scholar of the day. He counted among his students the famed gisaeng Hwang Jini, for whom he wrote this sijo:
Other works:
Hwadamjip (화담집, 花潭集) - collection of his writings
Woniki (원이기, 原理氣) - About origin of Qi
Igiseol (이기설, 理氣說) - about processing of Qi
Taeheoseol (태허설, 太虛說) - About Mu of Qi
Gwisin sasaengnon (귀신사생론, 鬼神死生論) - about spirit of soul and life and death.