Mitrinović was born in 1887 into a family of Orthodox faith and Serbian culture at Donji Poplat, municipality Berkovići in Herzegovina during the Austro-Hungarian occupation.

[5] In the years leading up to the First World War, he achieved prominence with his poetic writings along with his literary criticism, initially dabbling in expressionism before shifting to futurism.

From late 1914 to early 1915, he participated in exhibitions of Meštrović's work,[6] which included a model of a monument he had designed to commemorate the Battle of Kosovo.

Ten years before La rebelión de las masas by Ortega y Gasset, Mitrinović prophesied: "Being different from the other races, the population of Europe has always given birth to its contradictions and always with the chances of their solution in some ultimate synthesis."

Mitrinović advocated a metaphysical Utopia (based on Plotinus, Clement of Alexandria, Lao Tzu, Jakob Böhme) but was also politically pragmatic.

"[citation needed] The works of Mitrinović have remained scattered in numerous European periodicals (like the provocative texts based on psychological and philosophical theories, such as: Frojd prema Adleru (Freud versus Adler), Značaj Jungovog dela (The Importance of Jung's Work), Marks i Niče kao istorijska pozadina Adlera (Marx and Nietzsche as the Historical Background of Adler), Načela genija (The Principles of Genius), Carstvo snova (The Realm of Dream).

In 1914, wishing to establish the movement "The Fundamentals of the Future", he maintained correspondence with the following potential associates: Giovanni Papini, Stanisław Przybyszewski, Martin Buber, Gershom Scholem, Upton Sinclair, Henri Bergson, H. G. Wells, Dmitry Merezhkovsky, Leonid Andreyev, Maxim Gorky, Maurice Maeterlinck, Pablo Picasso, Filippo T. Marinetti, Anatole France, George Bernard Shaw, and Knut Hamsun.