Similarity to other theorists In Aguilon's book there are elements of perspectivities as well as the stereographic projections of Ptolemy and Hipparchus. Unaware that Johannes Kepler had already published optical theories years before him, Aguilon decided to share his insights on geometric optics. At the age of 20, the Dutch poet Constantijn Huygens read Aguilon's and was enthralled by it. He later said that it was the best book he had ever read in geometrical optics, and he thought that Aguilon should be compared to Plato, Eudoxus and Archimedes. In fact the title of Constantijn Huygens' first publication imitated Aguilon's title (omitting letters p and c): Otiorum Libri Sex (1625).
sImILaRity TO Other thEorisTs in AgUilon's bOok tHere are eLeMEnts Of perSPectiVitieS AS well as the stereogrAphIc PRojEctions of ptoLeMy and hIPparchus unAwarE that johanneS keplEr had alReady puBlISHed OPtiCAl thEoRieS yeaRS before hIm aguILon decIdeD to sharE hiS inSigHTs on gEomeTriC opticS at The age of 20 ThE dutCH poeT ConstantIjN HuYgenS rEaD AgUiloN'S and was enThrallEd By it he lAter said ThAT it wAS tHE beSt book hE Had ever rEaD in geOMetRiCAl OptiCs and HE thouGht That Aguilon shoUld be compaRed To pLatO EudoxuS and ArcHImedes iN FAct thE Title of constaNTIjn hUygEns' first pUBlicatIoN imitaTED aGuILon's tItle (OmITtinG Letters P and c) OtIorUm LiBri Sex (1625)