Hi everyone,
I have always believed in retrospective learning, where we look at our own past, and self reflect for improvement. Another avenue is looking at civil history and learning from the past, such as from the actions and outcomes of past decisions of great leaders. I have stumbled onto this link which showcases speeches of admirable leaders. Have a look at the speaking styles, and the words used to insight, captivate and impact the audience.
https://www.opencolleges.edu.au/careers/blog/10-greatest-leadership-speeches-of-all-time