Analysis of information sources in references of the Wikipedia article "Basil Hall Chamberlain" in English language version.
The second point was his attitude toward his friends — his quondam friends — all of whom he gradually dropped, with but few exceptions...(quoted from Chamberlain's letters). Chamberlain wrote to Hearn's biographer to explain that Hearn never lost his esteem, and he wrote a few times to Hearn, who had moved away to Matsue, Shimane, but the letters went unanswered.