A chief source of that suffering which we found above to be essential and inevitable to all life is, when it really appears in a definite form, that Eris, the conflict of all individuals, the expression of the contradiction, with which the will to live is affected in its inner self, and which attains a visible form through the principium individuationis.
Sofrimenduaren iturri nagusietako bat, goian bizitza ororentzat esentzial eta saihestezintzat aurkitu duguna, errealki eta taxu determinatu batean agertzen den heinean, Eris hura da, norbanako guztien borroka, kontraesanaren adierazpena, zeinekin bizitzeko nahimena barnean harrapaturik baitago eta principium individuationis-aren bidez ikuskor izatera iristen baita: