This article presents a comparative analysis of the concepts of time held by Ibn Sina (Avicenna), a representative of medieval Islamic philosophy; Henri Bergson, a figure in 20th-century French philosophy; and Martin Heidegger, a representative of German existential philosophy. The article examines their perspectives on time, methodological approaches, and the similarities and differences between them. The study highlights the continuity and distinctive characteristics found within Eastern and Western traditions of the philosophy of time.

This article analyzes the relationship between Being and humanity in Martin Heidegger's "Letter on Humanism." It explores the philosophical foundations of his critique of traditional humanism, the specific understanding of human essence, and the role of language as a space for the revelation of Being. It demonstrates that humanity is viewed not as the center of existence, but as one called to preserve the truth of Being. Hermeneutic and comparative philosophical methods are employed. The results demonstrate the relevance of Heidegger's ideas for contemporary understanding of human identity and spiritual values ​​in the context of global transformations. Keywords: Being, humanity, humanism, language, existence, Heidegger, philosophical anthropology.