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.

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.