Editing Cogito, ergo sum (section)

=== ''The Search for Truth by Natural Light'' ===
Descartes, in a lesser-known posthumously published work written ca. 1647,<ref>{{Citation | last = Gouhier | first = Henri | author-link = Henri Gouhier | title = ''La pensée religieuse de Descartes'' | year = 1924 | page = 319 | url = https://books.google.com/books?id=8Dw1AAAAIAAJ&pg=PA319}}</ref> originally in French with the title {{lang|fr|La Recherche de la Vérité par La Lumiere Naturale}} (''[[The Search for Truth by Natural Light]]'')<ref name="AT" /> and later in Latin with the title {{Lang|la|Inquisitio Veritatis per Lumen Naturale}},<ref>{{Cite book |last=Descartes |first=René |url=https://books.google.com/books?id=XDBnAAAAcAAJ&q=%22dubito%2C+ergo%22&pg=RA2-PP1 |title=Renati Des-Cartes Mvsicae compendivm |date=1683 |publisher=ex typogr. Blauiana |language=la}}</ref> provides his only known phrasing of '''the cogito''' as {{lang|la|'''cogito, ergo sum'''}} and admits that his insight is also expressible as '''''dubito, ergo sum''''':<ref name="Hintikka"/>
[[File:Dubito,_ergo_sum.jpg|thumb|"dubito, ergo sum, vel, quod idem est, cogito, ergo sum" in ''Inquisitio Veritatis per Lumen Naturale'']]
{{Verse translation|{{lang|la|... [S]entio, oportere, ut quid dubitatio, quid cogitatio, quid exsistentia sit antè sciamus, quàm de veritate hujus ratiocinii: '''''dubito, ergo sum''''', vel, quod idem est, '''''cogito, ergo sum'''''{{efn|name="formatting"}} : plane simus persuasi.|italic=unset}}|… [I feel that] it is necessary to know what doubt is, and what thought is, [what existence is], before we can be fully persuaded of this reasoning — '''''I doubt, therefore I am''''' — or what is the same — '''''I think, therefore I am'''''.{{efn|Translation by Hallam,<ref>{{Citation | last = Hallam | first = Henry | title = Introduction to the Literature of Europe in the 15th, 16th, and 17th Centuries | volume = II | edition = 2nd | page = 451 | year = 1843 | url = https://books.google.com/books?id=M4dZUnDvc1kC&q=%22%27%27%27%27%27I+doubt,+therefore+I+am%27%27%27%27%27,+or+what+is+the+same,+%27%27%27%27%27I+think,+therefore+I+am%27%27%27%27%27,+%22&pg=PA451}}</ref> with additions for completeness.}}}}