I'm not an Aristotle scholar, and in fact I'm too indolent to do any research on his thought, so I'll just state something about which I have wondered and I'll consider that my responsible blogosphere citizenship for the day.
Aristotle famously characterized virtues as the golden mean between vices. The usual example seems to be: courage. It is a mean between impetuous action on the one hand, cowardice on the other. Temperance is likewise between anhedonia and hedonism --between the inability to experience pleasure and the inability to master one's pleasures. So far so good. Likewise, I remember hearing somewhere (and remember the indolence problem mentioned above) that justice for Aristotle is the mean between severity and leniency.
I wonder though about wisdom, the virtue otherwise known to the ancients as prudence. Is that also a mean between two vices and, if so, what are the vices?
My guess would be credulity on the one hand, and an excess of skepticism on the other. But if this is right, the implication is that a wise man is one who believes something when the right amount of evidence for it is available -- who is neither too demanding of proof, not too gullible. And that seems like a Jamesian notion of wisdom. Perhaps we could say that wisdom implies neither an excess nor an absence of the will to believe. And call ourselves Arijamesians.