This section shows a discussion between Socrates and Callicles where they compare self indulgence and self discipline. Callicles says that the only way to live is to restrain your desires so that they do not grow any larger, and they can still use their courage and cleverness. He argues that most people cannot do this, which is why they say that self indulgence is a bad thing. Callices says that self discipline seems like a horrible life, and if a person is able to live a life of self-indulgent freedom that it would be the happiest state of existence. Socrates is an advocate for a life of self discipline, and attempts to explain it to Callicles by using jars. Callicles still believes, however, that people who live lives of self discipline have no pleasure.
I found this passage interesting because I feel as if it is very difficult to distinguish a life of self discipline and self indulgence, and there are benefits to both lives. It is for this reason that I think a truly happy person should live a life that mixes the two together. If someone lives with self discipline, then it is true that they may not have as much happiness but they may be healthier, like if they do not indulge on fattening foods, for example. If a person indulges on fattening foods, they might be happier and enjoy eating them, however they will not have good health benefits that a disciplined person would.