Known for his mystical and symbolist themes, Miciński's works often explore the human psyche, existential questions, and the metaphysical aspects of reality.

[6][7] Miciński's dramatic works, such as Kniaź Patiomkin (Prince Potemkin) and Termopile polskie (Polish Thermopylae), further demonstrate his innovative approach to literature, combining historical and mythological motifs with a modernist sensibility.

[8][9] His writing often reflects his deep engagement with contemporary philosophical and spiritual movements, including Theosophy and early psychoanalysis.

[11] Miciński's unique style and thematic concerns place him among the most distinctive voices of the Young Poland movement, drawing comparisons to other symbolist writers like Stanisław Wyspiański and Bolesław Leśmian.

His works continue to be studied for their rich symbolism, philosophical depth, and contribution to the development of modernist literature in Poland.