he had sought to convert his provisional definitions into final ones by
tracing their connexion with the summum genus, the (Greek), in the
Parmenides his aspirations are less ambitious,' and so on. But where does
Dr. Jackson find any such notion as this in Plato or anywhere in ancient
philosophy? Is it not an anachronism, gracious to the modern physical
philosopher, and the more acceptable because it seems to form a link
between ancient and modern philosophy, and between physical and
metaphysical science; but really unmeaning?

(5) To this 'Later Theory' of Plato's Ideas I oppose the authority of
Professor Zeller, who affirms that none of the passages to which Dr.
Jackson appeals (Theaet.; Phil.; Tim.; Parm.) 'in the smallest degree prove
his point'; and that in the second class of dialogues, in which the 'Later
Theory of Ideas' is supposed to be found, quite as clearly as in the first,
are admitted Ideas, not only of natural objects, but of properties,
relations, works of art, negative notions (Theaet.; Parm.; Soph.); and that
what Dr. Jackson distinguishes as the first class of dialogues from the
second equally assert or imply that the relation of things to the Ideas, is
one of participation in them as well as of imitation of them (Prof.
Zeller's summary of his own review of Dr. Jackson, Archiv fur Geschichte
der Philosophie.)

In conclusion I may remark that in Plato's writings there is both unity,
and also growth and development; but that we must not intrude upon him
either a system or a technical language.

Balliol College,
October, 1891.