I have so many different personalities in me and I still feel lonely.

You cannot be lonely if you like the person you're alone with.

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

I paint self-portraits because I am so often alone, because I am the person I know best.

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

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

Only the lonely know the way I feel tonight.

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.

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

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