The only real progress lies in learning to be wrong all 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.

Even in the presence of others he was completely alone.

If you are lonely when you're alone, you are in bad company.

Only the lonely know the way I feel tonight.

Absolutely lonely people have few personal interactions of any kind.

Every man is born as many men and dies as a single one.

Yes, I guess you could say I am a loner, but I feel more lonely in a crowed room with boring people than I feel on my own.

Always give a word or sign of salute when meeting or passing a friend, or even a stranger, if in a lonely place.

I don't want to be alone, I want to be left alone.