An open enemy is better than a false friend.

Related:

• The enemy of my enemy is my friend
  Arab...
• Reconciled friend is a double
  enemy. --...
• Money leant to a friend must be recovered from an enemy.
  German...
• Tell nothing to thy friend that thy enemy may not know.
  Danish...
• False modesty is better than none. --
  Vilhjalmur...
• It is easier to talk than to hold one's tongue.
  Greek...
• Sleep is better than
  medicine. --...
• It is easier to forgive an enemy than to forgive a friend.
  William...
• It is better to decide between our enemies than our friends;
  for one of our friends will most likely become our...