ctrine of ideas.
But on the other hand there is not the slightest reason to assume that
the doctrine and its terminology were not familiar to Plato at the time
when this part of the Republic was written. Cf.
Unity of Plato's Thought, pp. 31 ff., 35. Statistics
of the use of EI)=DOS and I)DE/A(Peiper's Ontologica
Varia Socratica, Wilamowitz, Platon,
ii. pp. 249-253), whatever their philological interest, contribute
nothing to the interpretation of Plato's thought. Cf. my De
Platonis Idearum Doctrina, pp. 1, 30, and Class
Phil. vol. vi.
pp. 363-364. There is for common sense no contradiction or problem in