Everyone should have access to the great works of the world, whether heavy (Shakespeare, “Moby-Dick”, pi to 1m places), or light (Peter Pan, Sherlock Holmes, the “Kama Sutra”).
He knows he's done something chock-full of power, magisterial. So excitedly he sends it off to Theo, who moans about how hard it is to sell Vincent's dark pictures, when everything in Paris is bright.
So instead of learning, you know, obscure vocabulary that you're not very likely to use in everyday conversations, you're learning things that are definitely going to help you.
Since some of the even the most obscure ancient names have been updated, their modern incarnations could make a perfectly charming name for your own little hero or heroine.
It was an arcane legal specialty centered on the special tax perks for industries, such as renewable power, whose growth served broader national interests.