Julian takes up the idea of his ---- Iamblichus. I'm translating and drawing a blank. It feels like I'm missing something obvious. There's got to be a better word here than 'inspirer'. I don't think 'muse' quite works either. 'Hero' is probably too much.
Here are some suggestions:
- Role model
Here are synonyms for role model, since you liked that suggestion, from Thesaurus.com: https://www.thesaurus.com/browse/role%20model?s=t