In this study which elucidated the influence of spontaneous actor-public interaction in popular As Samir performances on advanced, Egyptified stagings of Brecht's plays, he already emphasized the active rather than passive aspect of reception as a socio-culturally ‘situated’ process that typically occurs in a context of specific interests, needs, etc.[18] The value of this study was noted by Prof. Stéphane Santerres-Sarkany.[19] Other scholars saw the study as very valuable, too, notably Martin Franzbach.[20] The book was also praised by the Brecht scholar Reinhold Grimm. Grimm wrote that "Youssef's approach is highly enlightening, and in fact, exemplary for any future investigation of Brecht's influence in the Third World."[21] Recognizing the relevance of Youssef's approach to modern theater, the Goethe Institute in Tunis invited Youssef in 1972 to deliver lectures about Brecht's theatre in the Arab World. At the time, his Arabic translation of Brecht's play "Der Jasager und der Neinsager" was performed in the Tunisian province Al-Kaf; it was directed by Monsef Al-Souissi.