Hit me, and we'll hit you

Alright I'm gonna teach you how to be the real Mafioso. Follow these rules. These might be changed so keep your heads down... Something like that.

• Be loyal to members of the organization. Do not interfere with each other’s interest. Do not be an informer….
  
• Be rational. Be a member of the team. Don’t engage in battle if you can’t win….The directive extends to personal life.
  
• Be a man of honor. Respect womanhood and your elders. Don’t rock the boat….
  
• Be a stand-up guy. Keep your eyes and ears open and your mouth shut. Don’t sell out….The ‘stand-up guy’ shows courage and ‘heart.’ He does not whine or complain in the face of adversity, including punishment, because ‘If you can’t pay, don’t play.’
  
• Have class. Be independent. Know your way around the world.”

Originally posted by Don Corleone- The Godfather:

"Keep your friends close, but your enemies closer"