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.

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

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

We are all sentenced to solitary confinement inside our own skins, for life.

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

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

Living alone makes it harder to find someone to blame.

Alone we can do so little together we can do so much.

I restore myself when I'm alone.

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