Then he moved to various media outlets, especially the newspapers "Al-Nida" and "Al-Akhbar", and he supervised, respectively, the cultural page in each of them.
His father is the Lebanese thinker, Marxist intellectual, and martyr Hussein Mroue, and the author of several books on Arab heritage and literary criticism.
In 1949, after his father's expulsion from Iraq due to revolutionary activity, he returned with his family to Lebanon with a high school diploma and joined the American University of Beirut (AUB)[2] where he majored in mathematics and became fluent in English.
During his final years, he became an editor of "Al-Tareeq" magazine and took interest in more philosophically and politically inclined issues.
[3] Nizar Mroue's legacy remains present not only with his family, but also in his writings, critiques, and the works that he influenced including the plays of the Rahbani Brothers, Lebanon's most distinguished musicians and playwrights, whom he developed a mutual admiration with; in the words of Karim Mroue: "Nizar developed a deep respect for the Rahbanis.