I love The Parallel Lives by Plutarch. I first read it when I was in junior high school. 

Among those lives, I'm particularly interested in Lucius Cornelius Sulla. His life and the history following his death provide lessons for the White House. Furthermore, they offer serious implications for Japan, an allied nation,  in the post-Abe era. 

Both countries share a similar situation regarding constitutional crises and the continuity of their state systems. We are often too absorbed in chasing tech trends to notice that we are forgetting the very societal foundations upon which that technology relies.