Joseph Zobel said this quote

Yet I had become very attached to George Roc. I liked him, not for the joy of playing with him, not for some talent that made him stand out from the rest, not even for his kindness: above all, I liked him because he was always sad and because the things he told me caused me a degree of pain.....George Roc was the first being that I'd met who saw and felt himself unhappy.