Full Idea
The god explained that human nature comes in two forms, and the superior kind was that which would come to be called 'male'.
Gist of Idea
The god said human nature comes as the superior male, and inferior female
Source
Plato (Timaeus [c.362 BCE], 42a)
Book Reference
Plato: 'Timaeus and Critias', ed/tr. Waterfield,Robin [OUP 2008], p.31
A Reaction
Since this contradicts what Plato says about women as Guardians, I surmise that this is the view of Timaeus, rather than of Plato. This view is presumably the more common one in its time.
Related Idea
Idea 24235 Female Guardians will have identical duties to the men [Plato]