" At the end, in Harry’s handiwork, there’s nothing sentimental about love, no sunlit clouds and glory notes – it’s a substantial, earthbound connection, grounded in effort, kindness and decency. Learning to love, Harry liked to say, is really about learning to live. Perhaps everyday affection seems a small facet of love. Perhaps, though, it is the modest, steady responses that see us through day after day, that stretch into a life of close and loving relationships. "

― Deborah Blum , Love at Goon Park: Harry Harlow and the Science of Affection