What is rhetoric? Yes, the dialogue will turn around this issue, but not only. I loved it. The reflections are vivid, the text is dramatic, and one took in the story. One imagines being in the place of Callicles and debate or being in the area of Socrates. We speak here of the beautiful and the ugly, just and the unjust, injustice, power in many forms, and even the soul. Contrary to what one might think, the choice of subjects is very varied.
In terms of injustice, I did not agree with Socrates. Indeed, he had persuaded that committing a crime is worse than suffering. Of course, this fact is a point of view, but I find it slightly reductive and should have been more thorough. Moreover, the dialogue lacks repetition since Plato would have transcribed in writing from the oral to the base. Indeed, during Socrates's recapitulations, he repeated what he had already said several times, and it was embarrassing to follow the reasoning. It was as if one had been arrested in a full circle to resume it after this recapitulation.
In conclusion, Plato's dialogue is not perfect, but it is dragging with suspense, very well written, and could be read in one afternoon. Despite its defects, it is incredible; to read urgently to have a good time!