"This is that which we call character,—a reserved force which acts directly by presence, and without means. It is conceived of as a certain undemonstrable force, a Familiar or Genius, by whose impulses the man is guided but whose counsels he cannot impart; which is company for him, so that such men are often solitary, or if they choose to be social, do not need society but can entertain themselves very well alone."
January 1, 1970
https://en.wikiquote.org/wiki/Solitude