A man content to go to heaven alone will never go to heaven.

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

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

Even in the presence of others he was completely alone.

Associate with men of good quality if you esteem your own reputation for it is better to be alone than in bad company.

Unless we love and are loved, each of us is alone, each of us is deeply lonely.

It is strange to be known so universally and yet to be so lonely.

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

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

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