And therefore the Cartesians very well distinguish between that light which is the cause of that sensation in us, and the idea which is produced in us by it, and is that which is properly light.
Eta horregatik cartesiarrek oso ongi bereizten dute gure baitako sentipen horren kausa den argia, hark guregan sortzen duen eta zehazki argia deritzan ideiatik.