Ingeneral，itisabsurdtomakethefactthatthethingsof
thisearthareobservedtochangeandnevertoremaininthesame
state，thebasisofourjudgementaboutthetruth。Forinpursuingthe
truthonemuststartfromthethingsthatarealwaysinthesamestate
andsuffernochange。Sucharetheheavenlybodies；forthesedonot