That the aggressor, who puts himself into the state of war with another, and unjustly invades another man's right, can, by such an unjust war, never come to have a right over the conquered, will be easily agreed by all men, who will not think, that robbers and pyrates have a right of empire over whomsoever they have force enough to master; or that men are bound by promises, which unlawful force extorts from them.