Did Newton himself ever complain about loneliness? I 've never heard anything of the sort, yet this writer assumes it.
Try to picture the genius of Newton in the dark ages in which he lived. He found patterns and understood the world in astonishing ways. I think it was genuinely impossible for him to find a soulmate other than himself, even among his educated peers. He found patterns and understood the world in a profoundly different way than others. Should we not assume he was happy with discovering the unimaginable? Is that even comparable to the petty joy of socializing?