This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
A speech was a talk given by an individual with the purpose of encouraging, informing, berating, ordering, or remembering.
In 2161, Jonathan Archer gave an important speech at the founding of the alliance which would later lead into the United Federation of Planets. Deanna Troi had to memorize this speech in grammar school. (ENT: "These Are the Voyages...")