Whether for the catchy pseudonym, or (more likely) for the author's lively style and imagination, his books were a resounding success, and he became a national celebrity. Even though his identity soon was known to everybody, he continued to use the name of Malba Tahan in his public life. He had a rubber stamp made with that name in Arabic script, which he used when grading his student's homework; and, in 1952 — by special permission of Brazilian President Getúlio Vargas — he added "Malba Tahan" to his own legal name.