text: That is not what the doctrine says. Thomas Aquinas said, in  Quodlibet III, 27
  
  Every judgment of conscience, be it right or wrong, be it about things evil in themselves or morally indifferent, is obligatory, in such wise that he who acts against his conscience always does moral evil.
  
  He expands on this in the Summa Theologica I-II, q 19, art 5, and concludes that every conscience binds, even an erring one.
  
  Perhaps you should study Catholic theology.