Moreover Angeli brought forward a most foolish argument, affirming that even if prescription could not create ownership, still an exception ought to be made in favor of a possessor. Papinian however in unmistakable words says there is no exception,[123] nor could he think otherwise, because in his day prescription was itself an exception. It is therefore true, as expressed also in the laws of Spain,[124] that prescription based on no matter how immemorial a time, sets up no title to those things which are recognized as common to the use of mankind. One reason among others which can be given for this definition is that any one who uses a _res communis_ does so evidently by virtue of common and not private right, and because of the imperfect character of possession he can therefore no more set up a legal title by prescription than can a usufructuary.[125] A second reason not to be overlooked is that although a title and good faith are presumed in a prescriptive right created by the efflux of immemorial time, nevertheless if it appears from the nature of the thing itself that no title at all can be established, and if thus there becomes evident bad faith--a thing held to be permanent in a nation as well as in an individual--then prescription fails because of a - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - censetur, et ex duplici defectu praescriptio corruit.[126a] Tertia vero, quia res haec est merae facultatis, quae non praescribitur, ut infra demonstrabimus. Sed nullus est finis argutiarum. Inventi sunt qui in hoc argumento a praescriptione consuetudinem distinguerent, ut illa scilicet exclusi, ad hanc confugerent. Discrimen autem quod hic statuunt sane ridiculum est: ex praescriptione aiunt ius unius quod ab eo aufertur alteri applicari;[127a] sed cum aliquod ius ita alicui applicatur ut alteri non auferatur, tum dici consuetudinem; quasi vero cum ius navigandi quod communiter ad omnes pertinet, exclusis aliis ab uno usurpatur, non necesse sit omnibus perire quantum uni accedit. Errori huic ansam dederunt Pauli verba non recte accepta, qui cum de iure proprio maris ad aliquem pertinente loqueretur,[128a] fieri hoc posse dixit Accursius per privilegium aut consuetudinem: quod additamentum ad Iurisconsulti textum nullo modo accedens mali potius coniectoris esse videtur quam boni interpretis. Mens Pauli supra explicata est. Ceterum illi si vel sola Vlpiani verba,[129a] quae paulo ante praecedunt, satis considerassent, longe aliud dicturi erant. Fatetur enim ut quis ante aedes meas piscari prohibeatur, esse quidem - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - double defect.[126] Also a third reason is that we have under consideration a merely facultative right which is not prescriptible, as we shall show below.* * [See chapter XI.]