*Addéndum*, is a trilingual Romanian-Italian-English collection of philosophical poetry by Dumitru Găleșanu, published in 2014. A unique postmodern volume in the Romanian cultural area, it represents a synthesis of the author's scientific, philosophical and poetic concerns, in which various concepts from quantum physics and Einsteinian relativity harmoniously merge, all of which determine that, at times, verses and words can be perceived as « living, interchangeable and zesty beings », which fix the « spirit » in the structure of poetry and finally offer a unique cosmodern perspective on the relationship between man and universe. The poems follow one another entirely in alphabetical order, the author using an elegant, rich and suggestive poetic language, to explore perennial existential, philosophical and poetic themes such as: time, space and the universe, human nature, the relationship between the poet and artistic creation, love, etc., the graphics of the verses, made by the author for each poem, clearly recalling the experiment of the *Calligrams* of the French poet Guillaume Apollinaire. This is also to capture the essence of the ideas and convey them to the reader in a way that is as accessible and captivating as possible. *Addéndum* is a work of great complexity, characterized by a continuous search for meaning and truth in a world where knowledge and existence are inseparable. The love poems included in the volume are of a special lyrical beauty, downright ravishing.