Nevertheless, even those who lay burdens upon foreigners, or appropriate things common to all, rely upon a possession which is to some extent real. For since original occupation created private property, therefore detention of a thing, though unjust, gives an appearance of ownership. But have the Portuguese completely covered the ocean, as we are wont to do on land, by laying out estates on it in such a way that they have the right to exclude from that ocean whom they will? Not at all! On the contrary, they are so far from having done so, that when they divide up the world to the disadvantage of other nations, they cannot even defend their action by showing any boundaries either natural or artificial, but are compelled to fall back upon some imaginary line. Indeed, if that were a recognized method, and such a delimitation of boundaries were sufficient to make possession valid, our geometers long since would have got possession of the face of the earth, our astronomers of the very skies. But where in this case is that corporal possession or physical appropriation, without which no ownerships arise? There appears to be nothing truer than what our learned jurists have enunciated, namely,[102] that since the sea is just as insusceptible of physical appropriation as the air, it cannot be attached to the possessions of any nation. But if the Portuguese call _occupying_ the sea merely to have sailed over it before other people, and to have, as it were, opened the way, could anything in the world be more ridiculous? For, as there is no part of the sea on which some person has not already sailed, it will necessarily follow that every route of navigation is occupied by some one. Therefore we peoples of today are all absolutely excluded. Why will not those men who have circumnavigated the globe be justified in saying that they have acquired for themselves the possession of the whole ocean! But there - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - navem per mare transeuntem non plus iuris, quam vestigii relinquere. Verum etiam quod sibi sumunt neminem ante ipsos eum Oceanum navigasse, id minime verum est. Magna enim pars eius de quo agitur maris, ambitu Mauritaniae, iam olim navigata est; ulterior et in orientem vergens victoriis Magni Alexandri lustrata est, usque in Arabicum sinum.[103a]