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

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.

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

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

Yes, I guess you could say I am a loner, but I feel more lonely in a crowed room with boring people than I feel on my own.

Look at the sky. We are not alone. The whole universe is friendly to us and conspires only to give the best to those who dream and work.

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

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

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