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http://santamariadasvitorias.org/suma-teologica/ia-iiae-parte/tratado-dos-vicios-e-pecados/questao-75-das-causas-dos-pecados-em-geral/art-2-%e2%80%95-se-o-pecado-tem-causa-interior/
Art. 2 ― Se o pecado tem causa interior