THEAETETUS: True.

STRANGER: And do they not say that one soul is just, and another unjust,

and that one soul is wise, and another foolish?

THEAETETUS: Certainly.

STRANGER: And that the just and wise soul becomes just and wise by

the possession of justice and wisdom, and the opposite under opposite

circumstances?

THEAETETUS: Yes, they do.

STRANGER: But surely that which may be present or may be absent will be

admitted by them to exist?

THEAETETUS: Certainly.

STRANGER: And, allowing that justice, wisdom, the other virtues, and

their opposites exist, as well as a soul in which they inhere, do

they affirm any of them to be visible and tangible, or are they all

invisible?

THEAETETUS: They would say that hardly any of them are visible.

Sophist