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

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

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

Even in the presence of others he was completely alone.

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.

There are places and moments in which one is so completely alone that one sees the world entire.

The time you feel lonely is the time you most need to be by yourself.

Living alone makes it harder to find someone to blame.

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