Born in Giurgiu to a Jewish family[1] converted to Christianity ,[2] he completed his primary education in the city, at the Ion Maiorescu Gymnasium, followed by the Gheorghe Lazăr High School in Bucharest.
[4] With Blaga, he stood for Gândirea's early modernist tendencies, and grew opposed to Nichifor Crainic's intense advocacy of traditionalism (at a time when the magazine's editor, Cezar Petrescu, was occupying a middle position).
[5] With the publishing of his Dualismul artei in 1925 (followed by a long succession of collections of essays and studies), Vianu secured his place in the cultural landscape of modern Romania, and became the titular professor of aesthetics at the University of Bucharest.
[9] In 1945, after the end of Antonescu's regime and World War II, he was the recipient of a letter from his friend Eugène Ionesco: the document forms a list of intellectuals whom Ionesco harshly criticized for their pro-Iron Guard activism (they include Nae Ionescu, Mircea Eliade, Emil Cioran, Constantin Noica, Dan Botta, Mircea Vulcănescu, Horia Stamatu, Paul Sterian, Mihail Polihroniade, Haig Acterian, Dumitru Cristian Amzăr, Costin Deleanu and Paul Deleanu).
[10] In charge of Romania's National Theater in 1945, ambassador to the Socialist Federal Republic of Yugoslavia in 1946, Vianu became an honorary member of the Romanian Academy starting in 1955.
[2] He gave active support to literary figures who, as former members of the Iron Guard, faced imprisonment — Vianu was a defense witness in the trial of Traian Herseni, and, with Mihai Ralea, the author of an appeal for the release of Petre Ţuţea.