Cowardice is impotence worse than violence. The coward desires revenge but being afraid to die, he looks to others, maybe to the government of the day, to do the work of defense for him. A coward is less than a man. He does not deserve to be a member of a society of men and women.
There is no passion in the mind of man so weak, but it mates and masters the fear of death . . . Revenge triumphs over death; love slights it; honor aspireth to it; grief flieth to it.
The weapon of suicide bombing is so desperate that you aren't even left with the possibility of taking revenge or punishing anyone; the terrorist is killed along with his victims, his blood mixing with theirs
One who is unassuming in dealing with people exhibits his arrogance all the more strongly in dealing with things (city, state, society, age, mankind). That is his revenge.
The death penalty fulfills a preventive function, but it is also very clearly a form of revenge. It is an especially severe form of punishment because it is so final. The human life is ended and the executed person is deprived of the opportunity to change, to restore the harm done or compensate for it.
People should either be caressed or crushed. If you do them minor damage they will get their revenge; but if you cripple them there is nothing they can do. If you need to injure someone, do it in such a way that you do not have to fear their vengeance.
I don't think you should support the death penalty to seek revenge. I don't think that's right. I think the reason to support the death penalty is because it saves other people's lives.