At eighteen he wrote a series of papers, signed Kata Phusin, i.e.
According to Suidas, he was also the author of 'E7rcxeepliyaTa KaTa XpevrtavCev (Animadversiones duodeviginti in christianos).
We discard the conception of the universal as a predicate applicable to a plurality, or even to all, of the members of a group. To know merely KaTa 7ravros is not to know, save accidentally.
His views are more fully expounded in the Hepi Tjjs KaTa HXdTWva BEoXoyias (In Platonis theologiam).