X-Cultural Studies, as a 21st-century academic discipline, is rooted in two foundational works: the Seonghaksipdo (聖學十圖) by Toegye (退溪) Yi Hwang (李滉), a 16th-century Eastern philosopher, and the Ethica by Spinoza, a 17th-century Western philosopher. In itself, X-Cultural Studies is already a crossing of cultures.

Although separated by different times and spaces, these two philosophers remarkably converge in explaining the essence of scholarship as the self-evident truth of self-understanding one's own feelings. Toegye traces his intellectual lineage to Zhu Xi's Neo-Confucianism of medieval Eastern culture; Zhu Xi, in turn, traces his to Confucius and Mencius of ancient Eastern culture. Spinoza, meanwhile, traces his roots to the theology of Anselm in medieval Western culture; Anselm looks back to Socrates and Plato of ancient Western culture. From this, we can confirm that scholarly traditions belonging to different cultures across time and space are, in their essence, in agreement. The following conclusion is therefore inevitable.

The essence of this scholarship is to understand, through self-understanding of one's own feelings, the perfection and beauty of one's own existence as an eternal necessity. Because it is a scholarship of eternal infinity, it is learned and understood only through the eternal and infinite.

This learning is the method for studying the diverse fields of culture, art, psychology, society, and healing — for without feelings, none of these exist. The phenomena of feelings, as sensibly perceived within the limits of time and space, are infinitely varied in infinite ways. Yet what Toegye and Spinoza teach us is that infinite feelings carry, by their very nature, the eternal necessity of their own existence. According to both thinkers, this truth is a necessity confirmed by the necessity of reason. The following conclusion is therefore clear as an eternal necessity.

The Department of X-Cultural Studies at Kookmin University Graduate School awaits those who wish to cultivate together this eternally joyful and sacred scholarship of X-Cultural Studies.

21世纪学术理论"跨文化学"（X-cultural Studies）植根于两部奠基之作：16世纪东方文化哲学家退溪（退溪）李滉（李滉）的《圣学十图》（聖學十圖），以及17世纪西方文化哲学家斯宾诺莎（Spinoza）的《伦理学》（Ethica）。"跨文化学"本身已然是一种"文化交叉"。

这两位哲学家分属不同的"时间"与"空间"，却令人惊叹地以相同的方式解释学问的本质——即对自身情感的"自我理解"之自明性（自明）。退溪将其学问渊源追溯至中世纪东方文化的"朱子性理学"；朱子则将渊源追溯至古代东方文化的"孔子与孟子"。另一方面，斯宾诺莎将其学问渊源追溯至中世纪西方文化的"安瑟伦神学"；安瑟伦则将渊源追溯至古代西方文化的"苏格拉底与柏拉图"。由此我们得以确认：分属不同文化、跨越不同时空的学术理论，在本质上实为一致。因此，以下结论是必然的。

这门学问的本质，在于通过对自身情感的自我理解，以永恒的必然性领悟自身存在的完整性与美。正因其为永恒无限之学，唯有学习并理解永恒无限，方能通达其道。

这种学习，正是研究不同文化、艺术、心理、社会与治愈的方法。因为离开情感，文化、艺术、心理、社会与治愈皆无从存在。在时间与空间的限制中被感知的情感现象，以无限的方式呈现出无限的多样性。然而，正是凭借退溪与斯宾诺莎的学问，我们得以领悟：无限的情感，就其自身存在而言，以永恒的必然性为其本性。依据退溪与斯宾诺莎，这一事实乃是以理性必然性所确认的真理之必然性。因此，以下结论以永恒的必然性昭然可见。

国民大学一般研究生院跨文化学系，正期待与志同道合之人，共同研习这门永恒无限、充满喜悦与神圣的跨文化学。