speech is to to inspire the American people to collectively work toward a better future, as explained below.
What is Purpose?
The intention or goal behind a speaker's speech is what we refer to as purpose. To put it another way, a speaker typically has a certain objective in mind, such as motivating or convincing the audience to take a certain action.
Regarding the past President
Obama's speech makes clear that his goal is to motivate people to collaborate for a brighter future.
In particular, the final statement of the section, "We are meant for this," reveals this purpose. Moment will present itself, and we will seize it—as long as we do it jointly.
