朝鲜朝儒学家东武李济马的“四象哲学”渊源于孔孟之道。他不仅批判了汉代以来的诸子学与佛教，而且扬弃当时的主流思想性理学，提出了具有创意的“四象哲学”。李济马的易学思维特色：一是把“四象哲学”中的“四象”界定为“事”“心”“身”“物”，并以此来解释“四象”和“八卦”；二是以“《伏羲八卦图》”为根据分成乾·兑、坎·巽、坤·艮、离·震四个方位来说明“四象”；三是借鉴“《文王八卦图》”以“八卦”来说明“四象医学”的哲学原理。
The “Four-Image Philosophy” （sixiang zhexue，四象哲学） by Lee Jaema，a Confucian scholar in Chosun Korea，derived its intellectual inspirations from Confucius and Mencius.He as much criticised Confucianism and Buddhism since the Han as discarded the then mainstream xinglixue（性理学，studies on nature and principle），in which stead he proposed with originality his sixiang zhexue .Lee Jaema's thoughts also bore distinctive yixue（易学，studies on the Book of Changes ） characteristics.For one thing，sixiang（four images） as in his sixiang zhexuereferred to “matter” （shi，事），“mind” （xin，心），“body” （shen，身），and “thing” （wu，物），which were used to explain sixiangand bagua（eight trigrams）.Furthermore，Fuxi Chart of Eight Trigrams（fuxi bagua tu，伏羲八卦图） was used as the basis to explain sixiangfrom the four directions of qian-dui（乾·兑），kan-xun （坎·巽），kun-gen （坤·艮），and li-zhen（离·震）.Finally，drawing on Wenwang Chart of Eight Trigrams（wenwang bagua tu，文王八卦图），his use of baguaaimed to explain the philosophical principles of his sixiangmedicine （sixiang yixue，四象医学）.
