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.

When so many are lonely as seem to be lonely, it would be inexcusably selfish to be lonely alone.

I never said, 'I want to be alone.' I only said, 'I want to be left alone.' There is all the difference.

Every man must do two things alone he must do his own believing and his own dying.

Living alone makes it harder to find someone to blame.

All men's miseries derive from not being able to sit in a quiet room alone.

All of our unhappiness comes from our inability to be alone.

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

The best part about being alone is that you really don't have to answer to anybody. You do what you want.

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