knowledge we possess of what he taught. That it formed practically the central point in the whole philosophy of the Eleatic School, is likewise a familiar fact. Later on, the New Platonists were steeped in the same, one of their chief tenets being: d?? t?? ???t?ta ?p??t?? p?sa? ?u??? m?a? e??a?. (All souls are one, because all things form a unity.) In the ninth century we find it unexpectedly appearing in Europe.

It kindles the spirit of no less a divine than Johannes Scotus Erigena, who endeavours to clothe it with the forms and terminology of the Christian religion. Among the Mohammedans we detect it again in the rapt mysticism of the S�fi. In the West Giordano Bruno cannot resist the impulse to utter it aloud; but his reward is a death of shame and torture. And at the same time we find the Christian Mystics