Since therefore, to cite Pomponius, building is one kind of occupation, it is permissible to build upon the shore, if this can be done without inconvenience to other people;[74] that is to say (I here follow Scaevola) if such building can be done without hindrance to public or common use of the shore. And whoever shall have constructed a building under the aforesaid circumstances will become the owner of the ground upon which said building is; because this ground is neither the property of any one else, nor is it necessary to common use. It becomes therefore the property of the occupier, but his ownership lasts no longer than his occupation lasts, inasmuch as the sea seems by nature to resist ownership. For just as a wild animal, if it shall have escaped and thus recovered its natural liberty, is no longer the property of its captor, so also the sea may recover its possession of the shore. We have now shown that whatever by occupation can become private property can also become public property, that is, the private property of a whole nation.[75] And so Celsus considered the shore included within the limits of the Roman Empire to be the property of the Roman people. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - existimat; quod si ita est, minime mirandum est, eundem Populum subditis suis occupandi litoris modum per Principem aut Praetorem potuisse concedere. Ceterum et haec occupatio non minus quam privata ita restringenda est, ne ulterius porrigatur, quam ut salvus sit usus Iurisgentium. Nemo igitur potest a Populo Romano[76a] ad litus maris accedere prohiberi, et retia siccare, et alia facere, quae semel omnes homines in perpetuum sibi licere voluerunt. Maris autem natura hoc differt a litore, quod mare nisi exigua sui parte nec inaedificari facile, nec includi potest; et ut posset, hoc ipsum tamen vix contingeret, sine usus promiscui impedimento. Si quid tamen exiguum ita occupari potest, id occupanti conceditur. Hyperbole est igitur[77a] _Contracta pisces aequora sentiunt Iactis in altum molibus._ Nam Celsus iactas in mare pilas eius esse dicit qui iecerit.[78a] Sed id non concedendum si deterior maris usus eo modo futurus sit. Et Vlpianus eum qui molem in mare iacit, ita tuendum dicit si nemo damnum sentiat. Nam si cui haec res nocitura sit, interdictum utique, ‘Ne quid in loco publico fiat’ competiturum. Vt et Labeo, si quid tale in mare struatur, interdictum vult competere, ‘Ne quid in mari, quo portus, statio, iterve navigiis deterius sit, fiat’.[79a] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -