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

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

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

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

All men's misfortunes spring from their hatred of being alone.

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

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

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

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

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.