Jean Jacques Rousseau (1712–1778). Social Contract & Discourses. 1913.The Social Contract or Principles of Political Right. Book II.
Chapter V. The Right of Life and Death
The social treaty has for its end the preservation of the contracting parties. He who wills the end wills the means also, and the means must involve some risks, and even some losses. He who wishes to preserve his life at others’ expense should also, when it is necessary, be ready to give it up for their sake. Furthermore, the citizen is no longer the judge of the dangers to which the law desires him to expose himself; and when the prince says to him: “It is expedient for the State that you should die,” he ought to die, because it is only on that condition that he has been living in security up to the present, and because his life is no longer a mere bounty of nature, but a gift made conditionally by the State.
The death-penalty inflicted upon criminals may be looked on in much the same light: it is in order that we may not fall victims to an assassin that we consent to die if we ourselves turn assassins. In this treaty, so far from disposing of our own lives, we think only of securing them, and it is not to be assumed that any of the parties then expects to get hanged.
Again, every malefactor, by attacking social rights, becomes on forfeit a rebel and a traitor to his country; by violating its laws he ceases to be a member of it; he even makes war upon it. In such a case the preservation of the State is inconsistent with his own, and one or the other must perish; in putting the guilty to death, we slay not so much the citizen as an enemy. The trial and the judgment are the proofs that he has broken the social treaty, and is in consequence no longer a member of the State. Since, then, he has recognised himself to be such by living there, he must be removed by exile as a violator of the compact, or by death as a public enemy; for such an enemy is not a moral person, but merely a man; and in such a case the right of war is to kill the vanquished.
But, it will be said, the condemnation of a criminal is a particular act. I admit it: but such condemnation is not a function of the Sovereign; it is a right the Sovereign can confer without being able itself to exert it. All my ideas are consistent, but I cannot expound them all at once.
We may add that frequent punishments are always a sign of weakness or remissness on the part of the government. There is not a single ill-doer who could not be turned to some good. The State has no right to put to death, even for the sake of making an example, any one whom it can leave alive without danger.
The right of pardoning or exempting the guilty from a penalty imposed by the law and pronounced by the judge belongs only to the authority which is superior to both judge and law, i. e. the Sovereign; even its right in this matter is far from clear, and the cases for exercising it are extremely rare. In a well-governed State, there are few punishments, not because there are many pardons, but because criminals are rare; it is when a State is in decay that the multitude of crimes is a guarantee of impunity. Under the Roman Republic, neither the Senate nor the Consuls ever attempted to pardon; even the people never did so, though it sometimes revoked its own decision. Frequent pardons mean that crime will soon need them no longer, and no-one can help seeing whither that leads. But I feel my heart protesting and restraining my pen; let us leave these questions to the just man who has never offended, and would himself stand in no need of pardon.