The irony of Gatsby's funeral is that hundreds of people would show up at his parties but no one showed up at his funeral. Even though he had everything and everyone loved him for his possessions, no one cared enough to know him personally. Nick was his only friend that Gatsby actually had.
A good way to intensify meaning in the conclusion of a speech is to use an example.
Giving the audience an example helps the audience remember the importance of what you are saying and can help intensify the meaning. While a long story might capture the audience's attention, it would be something that would serve better in another part of the speech. A conclusion should not include any new information and should simply summarize what you have already said. It may also call your audience to action.
They needed a new receiver or else feelings would come back