A Short History of Greek Philosophy The period ofWesternphilosophystartsfromGreek philosophythatruns fromthe 6th centuryBCuntilthe 6th century.In this periodthere were 3periodsof thoughtnamely: 1.Opinionof naturalphilosopherswhoseekthe principleofall things(Arkhe)likeThales as “the first philosopher”,Anaximander,Anaximenes,Pythagoras,Herakleitos,Parmenides,ZenoofElea,Empedocles,