This is largely a thematic question. Check out the themes page below:
https://www.gradesaver.com/the-history-of-rasselas-prince-of-abissinia/study-guide/themes
The Question and Answer section for The History of Rasselas: Prince of Abissinia is a great resource to ask questions, find answers, and discuss the novel.
This is largely a thematic question. Check out the themes page below:
https://www.gradesaver.com/the-history-of-rasselas-prince-of-abissinia/study-guide/themes
There are a number of things he learned on his voyage: too many details to put in this short forum space. I suggest that you check out the GradeSaver themes page at the link below. You will find something that he learned under every theme.
Is this related to the work you have cited above?