And because the sentence of excommunication importeth an advice not to keep company, nor so much as to eat with him that is excommunicate, if a sovereign prince or assembly be excommunicate, the sentence is of no effect. For all subjects are bound to be in the company and presence of their own sovereign, when he requireth it by the law of Nature; nor can they lawfully either expel him from any place of his own dominion, whether profane or holy; nor go out of his dominion without his leave; much less, if he call them to that honour, refuse to eat with him. And as to other princes and states, because they are not parts of one and the same congregation, they need not any other sentence to keep them from keeping company with the state excommunicate: for the very institution, as it uniteth many men into one community, so it dissociateth one community from another: so that excommunication is not needful for keeping kings and states asunder; nor has any further effect than is in the nature of policy itself, unless it be to instigate princes to war upon one another.