What a curious statement. James did not consider the 'minimum expression of an idea' a virtue, he's almost infamous for his verbosity, as are many of the others in that list. I'll leave you with something from the start of The Ambassadors as an example:
The principle I have just mentioned as operating had been, with the most newly disembarked of the two men, wholly instinctive--the fruit of a sharp sense that, delightful as it would be to find himself looking, after so much separation, into his comrade's face, his business would be a trifle bungled should he simply arrange for this countenance to present itself to the nearing steamer as the first "note," of Europe.
http://classiclit.about.com/library/bl-etexts/hjames/bl-hjam...