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.

I restore myself when I'm alone.

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

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

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

When so many are lonely as seem to be lonely, it would be inexcusably selfish to be lonely 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.

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

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

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.