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# Title: [Lectiones XVIII, Cantabrigiae in Scholis publicis habitae] Lectiones XVIII, Cantabrigiæ in Scholis publicis habitæ (shelfmarks Leibn. Marg. 0; ZEN Leibn. Marg. 0)
# Folio 2, page id 797435492:0018
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 40 lines, status machine
# Lines: 40 recognised, mean confidence 0.94
# Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German.
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# After the first blank line: the recognised lines in reading order, one per line.

e V C LL a
Tuo xstimanda, ad riex communis usum beneticia subministret; visus
imperfectionibus sc viciistam prompta, quam certa, minimi sumptus,
e nullius periculi remedia conserendo. Neque, quum curioliltimus
ilte sensus noster ita varias indies, ita miras rerum species exhibeat
nobis; non admodum oblectare nos, non eximiâ roluptate mentes
nostras afticere polt, unde talis emergar apparentiarum diversitas, ec
quis sit illas attingendi mmodus nedum accurate, certoque coonolcere,
Ted utcunque verilimilicer arbitrari; praelerrim quum in nullâ parre
nostri, nec in tota Fortassis rerum compase, necelsitatibus, conmo-
dis, ex rolupcatibus nostris prospicientis melioris naturx Peu fines
agendi; seu modos plenius queamus perspicere; nusquam adeo di-
cinctius auc apertius opiticis naroier eluceat artificium. Verum
elosia perrexere non vacat, aut conrenir nobis. Rem pocius iptam
ad grediaur.
III. Oux circa visum occupatur discipiina communiter in tria mem.
bra dispertitur. primum, quod visus directis radiis objecta cernentis
affectiones considerat (hoc speciarim. Oprice nominatur;) alterum,
quod e radiorum ab opacis corporibus repercussu oriundas speculatur
apparentias (cui Catoptricae nomen inditum;) certium denique, quod
ideo Dioptrica rocitatur, quia causas investigat, aut exponit eorum
quae a radiis apparent per diversa media rranslucentibus, e corum Oc-
cursu demuraris. Juam distriburionem ut non improbamus, ita nobis
haud obserrandam proponimus; nedum quia multa paricer his com-
munia sunE, at prxcipue quia vilio quaeris, ut libet simplex ac directa,
licuri revera non absque nonnulla radiorum inflectione peragitur, ita
nec ea seclusa penitus intellisi porest aut explicari. Pgicur hujusmodi
methodo potius inlistendum censemus; ut nempe primo visionis cau-
Pa5 (qua scilicer illum exrrinsecus esticiune, aut afficiune) examine-
mus; tum ur videndi modum (hoc est quo pacto sensis hic noster ido-
neis organis instructus iltis concurrenribus causis, objectorum illas,
quas experimur, difterentias apprehendit) adnitamur exponere; de
hinc, ut Phaenomena quxdam selectiora suscipiamus elucidanda
postremoque Forlan, ue de risis remediis ac subsidiis aliquid sub.
jungaus.
IV. ViliolI Cautas CxteHas ecoo accstec, nemini jam dubium ele,
existimo, non ullâ (quanquam empedseli, Plaroui, Enolidi veceribus
aliis id placitum crac) ab oculo radiorum emissione, verum ab objectis
dedluente re quaviam, oculosque vercellente risum effici; quod e
Deroerito