These words filled me with a sort of melancholy and I was at a loss for an answer, for I felt when I was with him, when I was talking to him - and no doubt it would have been the same with anyone else - none of that happiness which it was possible for me to experience when I was by myself. Alone, at times, I felt surging from the depths of my being one or other ot those impressions which gave me a delicious sense of well-being. But as soon as I was with someone else, as soon as I was talking to a friend, my mind as it were faced about, it was towards this interlocutor and not towards myself that it directed its thoughts, and when they followed this outward course they brought me no pleasure.
Marcel Proust
solitude, solitude-as-a-choice