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

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

I restore myself when I'm alone.

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

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.

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

Even in the presence of others he was completely alone.

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

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

The best part about being alone is that you really don't have to answer to anybody. You do what you want.