[周易]의 六爻 重卦 構成 原理 - 三才論과 陰陽論을 中心으로 -

Abstract

I Ching is scriptures of Confucianism which expresses the principle of changes in the unique form of picture symbol. With regard to philosophical reason why I Ching is expressed in a form of picture and line, Confucius says 'the principle of changes was expressed in a form of symbolic line and picture inevitably since words and writings could not include all the meanings of saints.' Therefore, the subject and principle of changes that Confucius wanted to disclose will be included in picture symbol of I Ching. To analyze the principle of changes in a proper way, it is the most important academic work to examine 'rules and principles that picture symbol is formed in' in a proper way. Therefore, the purpose of the study was to examine the essential meaning of changes by studying on the principle and procedure in the composition process of six-line symbol in I Ching. Confucius explained about 'composition principle of picture symbol' in diverse ways in Sipik (十翼). Its core is three-principle theory and darkness-brightness theory. However, in the composition principle of picture symbol, the existing academic society doesn't make a deep discussion on with what grounds for argument and system the meaning of three principles and the logic of darkness and brightness participate in forming picture symbol and what its logical necessity is. In general, it is understood 'the theoretical system of I Ching is darkness-brightness theory.' However, it is thought that the essential proposition of changes 'the essential principle of I Ching is three principles' shall not be overlooked because of the above analysis. For, the existing usual understanding about picture symbol is still in the darkness-brightness theory of two-number division that is developed to 'two-line, four-symbol and eight-picture.'However, with regard to the composition of six-line symbol, as a result of examining its ontological meaning deeply, the study could see that the essential subject and principle of I Ching are rather in the three principles than the darkness-brightness theory and could examine that darkness-brightness structure was participated in a form of including the essential principle of the three-principle theory. Through such academic research process, the study could see that the ground of picture symbol developed to 'two-line, four-symbol and eight-picture' was based on rather the three-principle theory than simple darkness-brightness theory. The study could also examine that the meaning of the three-principle theory was a fundamental principle pursued by changes originally, not a simple methodological principle. Through the above discussion, the study could prove that the principle of changes was started from the three-principle theory beyond a vague and plane understanding of 'the philosophical logic of changes is the darkness-brightness theory and the three-principle theory', was expressed in a form of darkness and brightness and its final stage was 'six-line symbol image of the Change', the unique symbol system of I Ching, in three dimensions.