Unless we love and are loved, each of us is alone, each of us is deeply lonely.

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

Every man is born as many men and dies as a single one.

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

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

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

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

If you are lonely when you're alone, you are in bad company.

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.