This research deals with the texts published by Oscar Niemeyer in Modulo, a magazine edited by the architect himself, which was in circulation between 1955 and 1989. The reading of these texts revealed three recurrent themes: the first, present even in the first issue, has to do with the response to international criticism; the second, which initially appeared during the magazine's first year but gained greater notoriety after 1975, reveals a Niemeyer concerned with the legacy his work could leave for future generations of architects; and the last, evident in the last decade of the magazine, shows a change in discourse, which takes on a less didactic tone when explaining his projects and attempts to highlight his relevance, even in new contexts. The analysis of these documents and the identification of said themes demonstrate Niemeyer ' s concerns regarding his professional life and how he used the magazine to defend his work.