Kaykovus, a distinguished figure of the feudal Middle Ages, left an indelible mark through his sole written legacy, Kabusnama. This article provides a detailed exploration of this masterpiece, translated into various languages, serving as a gateway to understand the life, worldview, and contributions of Kaykovus. The theoretical underpinning of his religious-idealistic monism shapes his ontological, epistemological, and ethical perspectives. Through an in-depth analysis, we trace Kaykovuss ethical categories, including general, special, and particular, shedding light on his philosophical leanings and societal ideals. His views on truthfulness, contentment, generosity, and professional ethics offer a nuanced understanding of his moral philosophy. The article also delves into Kaykovuss examination of Javonmardi and Sufism, emphasizing their progressive and humanistic tendencies. Furthermore, it explores the intersections of Kaykovuss ideological limitations with socio-political life, religious ideology, and the philosophy of aristocracy. As we navigate his pedagogical views rooted in religious-idealism, the article underscores the contextual relevance of Kaykovuss teachings within the historical milieu.