In proportion to his intelligence he was extremely isolated. There's no record of his having had close friends. He traveled alone. Always. Even in the presence of others he was completely alone. People sometimes felt this and felt rejected by it, and so did not like him, but their dislike was not important to him. His wife and family seem to have suffered the most. His wife says those who tried to go beyond the barriers of his reserve found themselves facing a blank. My impression is that they were starved for some kind of affection which he never gave. No one really knew him. That is evidently the way he wanted it, and that's the way it was. Perhaps his aloneness was the result of his intelligence. Perhaps it was the cause. But the two were always together. An uncanny solitary intelligence.