Thanks for posting this. A while back I saw his blog post about oaths and vows [0] linked here on HN and it was an excellent read. I wasn't fortunate enough to have a thorough or rigorous history education, so I never thought I liked it. His blog has definitely kindled an interest in the subject I never knew I had.

[0] https://acoup.blog/2019/06/28/collections-oaths-how-do-they-...