Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646

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              <s id="s.001656">Et ab Aëre quidem vt incipiam, non immanifcſtum
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              videtur ipſum nihil poſſe ad accelerationem conferre;
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              quin-etiam potiùs officere, tantum abeſt, vt aër ſolus
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              ſit accelerationis cauſſa. </s>
              <s id="s.001657">Ipſe certè cùm priùs illum in
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              aliquam partem admittens, varia energiæ ipſius argu­
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              menta conquiſiui (auſus etiam ad cum ex parte referre
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              adactionem retrorsùm factam tormentariæ machinæ,
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              dum globus prorsùm exploditur; idque, vt iam reor,
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              iniutiâ, quòd potiùs ille totus effectus ad vnum ignem
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              pertineat) ſubieci ſtatim eas rationes, ob quas meritò
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              de mea aëris aſſumptione dubitaretur. </s>
              <s id="s.001658">Vt verò iam
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              vel vnicam aduerſum te heic repetam, quæſo ex te,
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              qui ſieri valeat, vt lapidi deorsùm tendenti ad celeri­
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              tatem aër conferat, non conferat tendenti ſurſum? </s>
              <s id="s.001659">Ni­
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              mirùm vt aër lapide cadente infernè abſcedit, ſupernè
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              ſuccedit: ſic ſursùm adacto ſupernè abſcedit, infernè
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              ſuccedit, &, tuo verbo vt
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              , ſe à tergo claudit. </s>
              <s id="s.001660">Non­
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              ne ergo, ſi deſcendendo iuuat aër impetum à grauitate
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              impreſſum: neceſſe eſt, vt aſcendendo iuuet impetum
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              impreſſum à manu? </s>
              <s id="s.001661">Et quia impetus à manu impreſ­
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              ſus fortior illo eſt, qui à grauitate imprimitur, ſiquidem
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              illum ſuperat, eóque ne quicquam reſiſtente, lapis ni­
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              hilo min ùs ten dit ſurſum: quid eſt, cur aſcendendo non
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              magis, quam exſcendendo iuuet? </s>
              <s id="s.001662">Nonne clauditur
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              à tergo rapidiùs, ſtatim ac manum lapis deſeruït, quàm
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              dum lapis initio cadit? </s>
              <s id="s.001663">Nonne ſaltem deberet tune
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              accelerationis quidpiam facere, non verò pati diminu­
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              tionem? </s>
              <s id="s.001664">Nonne & quandiù grauitate d
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              uicta, infe­
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              rioreque exſiſtente, aër à tergo velociùs occurrit? </s>
              <s id="s.001665">Sed
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              & quæſo te, nonne ipſe fateris reſiſtere aërem? </s>
              <s id="s.001666">Dixiſti </s>
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