Police discover Mafia's 'Ten Commandments' after arresting Godfather | the Daily Mail:
1. No one can present himself directly to another of our friends. There must be a third person to do it.
2. Never look at the wives of friends.
3. Never be seen with cops.
4. Don't go to pubs and clubs.
5. Always be available for Cosa Nostra, even if your wife's about to give birth.
6. Appointments must be respected.
7. Wives must be treated with respect.
8. When asked for any information, the answer must be the truth.
9. Money cannot be appropriated if it belongs to others or to other families.
10. People who can't be part of Cosa Nostra are anyone with a close relative in the police, with a two-timing relative in the family, anyone who behaves badly and doesn't hold to moral values.