Given from the Catholic Broadcasting Station 2SM Sydney Australia
Choose a topic from Vol 1:
Her dogmas are anything but worn-out. However to your main point I must reply by giving you the moral teaching of the Church concerning lies. The Church absolutely prohibits the use of any dishonest means, and declares that a deliberate lie is a sin under all circumstances. No good end in view can justify a lie.
He may not make a false oath to anyone on behalf of anything. The mere fact of calling upon the God of truth to witness to a falsehood is a grave sin under any circumstances, and a sacrilege. NOT is this true only for a Catholic. It is true for any man at all. Every Catholic knows that it is never lawful to tell a deliberate lie, and that it is still more unlawful to confirm a lie by a false oath.