Revenge is a dish best served cold.
More Klingon Proverbs:
Adhere to virtue honorably.Klingon
Peace is good for business.
Klingon
No enemy is boring.
Klingon
If you are afraid to die, you have already died.
Klingon
Listen to the voice of your blood.
Klingon
May you die well.
Klingon