Phronesis (prudence) is regarded by some Greek philosophers as virtue itself, with the cardinal virtues being aspects of it. Phronesis in this argument is presented as an addition to the virtues, in keeping with Meno's inability to think abstractly. It is only with the addition of phronesis that anything becomes beneficial.

Here I read through Platonic dialogues, translating and commenting on the Greek text as I go.

The resulting analyses may be found at:
https://theplatoparadigm.com

The full analyses include Euthyphro, Io, Hippias Minor, and Lysis, with extract/summaries from my books on Hippias Major, Meno, and Politeia (Republic)