From 1963 until 1968, he taught philosophy at the Franciscan seminary in Garibaldi, the major seminary of Viamão and at the Pontifical Catholic University of Porto Alegre.
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Hummes allowed the labour unions to meet in parishes throughout his diocese, going against the dictatorship in Brazil at the time.
Claudio Monteverdi | Claudio Roditi | Claudio Arrau | Claudio Reyna | Cláudio Taffarel | Claudio Scimone | Claudio Procesi | Claudio Baglioni | Claudio Lolli | Claudio Cecchetto | Claudio Magris | Claudio Naranjo | Sergio Claudio dos Santos | Claudio Marrero | Claudio Marchisio | Claudio Chiappucci | Claudio Bravo | Claudio Bisio | Claudio Vargas | Claudio Treves | Claudio Taffarel | Claudio Stampi | Claudio Scarchilli | Claudio Scajola | Claudio Saracini | Claudio Sanchez | Claudio R. M. Costa | Claudio Ranieri | Claudio Prieto | Claudio Osorio |