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

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

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

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

I restore myself when I'm alone.

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

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

As I get older I'm more and more comfortable being alone.

It's often just enough to be with someone. I don't need to touch them. Not even talk. A feeling passes between you both. You're not 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.