Two make an army against one.
More Icelandic Proverbs:
A greasy kitchen; a will with not much in it.Icelandic
Hunger, work, and sweat are the best herbs.
Icelandic
Better wise language than well combed hair.
Icelandic
The revenge that is postponed is not forgotten.
Icelandic
Everyone wants to live long, but no one wants to be called old.
Icelandic
You can't complain about the sea if you suffer shipwreck for the second time.
Icelandic