alone.
The capacity for not feeling lonely can carry a very real price, that of feeling nothing at all.
capacity, feeling lonely, alone, feeling
Associate with men of good quality if you esteem your own reputation for it is better to be alone than in bad company.
When so many are lonely as seem to be lonely, it would be inexcusably selfish to be lonely alone.
If it's true that our species is alone in the universe, then I'd have to say the universe aimed rather low and settled for very little.
It's often just enough to be with someone. I don't need to touch them. Not even talk. A feeling passes between you both. You're not alone.