Itoccurs, indeed, tomethatIhaveelsewhereclassedthiskindofdistinctionwiththemodal (viz., towardstheendoftheReplytotheFirstObjectionstotheMeditationsontheFirstPhilosophy); butthereitwasonlynecessarytotreatofthesedistinctionsgenerally, anditwassufficientformypurposeatthattimesimplytodistinguishbothofthemfromthereal.
, asconstituting, theonethenatureofmind, theotherthatofbody.
Thoughtandextensionmayberegardedasconstitutingthenaturesofintelligentandcorporealsubstance; andthentheymustnotbeotherwiseconceivedthanasthethinkingandextendedsubstancesthemselves, thatis, asmindandbody, , wemoreeasilyconceiveextendedorthinkingsubstancethansubstancebyitself, , which, intruth, areonlydiverseinthoughtitself (i.e., logicallydifferent); andaconceptisnotmoredistinctbecauseitcomprehendsfewerproperties, butbecauseweaccuratelydistinguishwhatiscomprehendedinitfromallothernotions.
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