He never is alone that is accompanied with noble thoughts.

Please, don't leave me alone with my thoughts... They'll kill me in an instant

If you are alone you belong entirely to yourself. If you are accompanied by even one companion you belong only half to yourself, or even less, in proportion to the thoughtlessness of his conduct; and if you have more than one companion you will fall more deeply into the same plight.

To be alone with our thoughts is to be alone with our darkest fears.

Never Alone!

Restless thoughts, like a deadly swarm of hornets arm'd, no sooner found alone, but rush upon me thronging.