Complex sentence: A legal fiction should not be employed to defeat law or result in illegality: it has been always stressed that a legal fiction should not be employed where it would result in the violation of any legal rule or moral injunction.
Split into simpler sentences: A legal fiction should not be employed to defeat law or result in illegality. It has been always stressed that a legal fiction should not be employed where it would result in the violation of any legal rule or moral injunction.