If we look at The Miser as one of the vices in
Imaging Aristotle, it is synonymous with illiberality or avarice.
This card could be a warning that, while it is a vice to give too little, it is also a vice to give to much. The mean is for us to be generous (
7 Doxe), Generosity. I am trying to find the card for
profligacy, or giving too much.
I am not sure if I like the "book meaning" the author gives us for Misero, "humility." The translation is "poor" in Italian. It also looks like it could be read as The Fool from standard tarot decks.
At any rate, it certainly lends a new layer of meaning to my tarot card readings whenever the Fool comes up for me again.