I finished "Claudius the God" on audiobook a few days ago.
I felt -- and I almost feel sappy saying this -- almost a palpable sadness, like an old friend was going away that I wasn't going to see again.
I guess good books do that.
But more than that, Emperor Claudius was a real figure... yet, the lack of comprehensive records on his reign let Robert Graves write an account with a relatively free hand. He left you wondering if Claudius was really an idiot, or if he was an idiot who got himself straightened out after he came into power, or if he was really a remarkable genius and cloaked it in foolishness to survive all the purges and assassinations.
Of course, the real Claudius was probably not so noble as Graves's historical-fiction Claudius.