text: While Christianity has never been about ‘blind obedience’ to any earthly authority, it is about ‘conscientious obedience’ to the truth, and Jesus is "the way, the truth and the light."  For Catholics, the supreme authority in matters of faith and morals has always been the individual’s ‘informed conscience’ which the Church teaches "is man's sanctuary and most secret core, where he finds himself alone with God, whose voice resounds within him."  As John Paul II wrote in Crossing the Threshold of Hope, “If a man is admonished by his conscience – even an erroneous conscience, but one whose voice appears to him as unquestioningly true – he must always listen to it. What is not permissible is that he culpably indulge in error without trying to reach the truth.”  This has been the Church’s teaching since the beginning.