Heraclitus, who was of opinion that every being was full of souls and demons, did nevertheless maintain that no one could advance so far towards the knowledge of the soul as ever to arrive at it; so profound was the essence of it.
Heraklitok, dena arimaz eta demonioz beterik zela zioena, uste zuen, hala ere, ez zela arimaren ezagutzaren aldera hain aitzinera joaten ahal non heltzen ahal zen, hain barrena baita haren izatea.