Joannes Paulus Magnus, John Paul the Great

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"[A] civil law authorizing abortion or euthanasia ceases by that very fact to be a true, morally binding civil law. . . . There is no obligation in conscience to obey such laws; instead there is a grave and clear obligation to oppose them by conscientious objection."
John Paul II, Encyclical Letter The Gospel of Life (Evangelium Vitae), no. 72 (March 25, 1995) (original emphasis).