Hlukanisa izazi zefilosofi ezingamaGreki ezilandelayo ngokwezikole zazo zokucabanga: uDemocritus, uAnaximander, uProtagoras, uEpictetus, uChrysippus, uTheano, uPythagorus noHeraclides.
Kwakunemibono eminingi ehlukahlukene kuyifilosofi yamaGreki asendulo. UDemocritus wayeyisazi sefilosofi sangaphambi kukaSocrates esasungula isiyalo se-Atomism. U-Anaximander wayengomunye umcabangi wangaphambi kukaSocrates owayeyilungu lesikole saseMilesian. U-Epictetus noChrysippus bobabili babengamafilosofi angamaStoic. UProtagoras wayeyisazi esidumile esabhekiselwa kuso nguPlato. UHeraclides wayengumPlatonist futhi engumfundi oqondile kaPlato. UPythagoras noTheano bobabili babefunda esikoleni sikaPythagoras, futhi kukholakala ukuthi babeshadile.