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.

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

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

I love to be alone. I never found the companion that was so companionable as solitude.

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

Even in the presence of others he was completely alone.

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

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

In Genesis, it says that it is not good for a man to be alone but sometimes it is a great relief.