Robert Isaacson writes in his book The Retarded Child: “Most are able to be happy, to enjoy the company of others, music, some sports, good food, and friends. ”
Robert Isaacson menulis dalam bukunya The Retarded Child, ” Kebanyakan bisa merasa bahagia, bisa menikmati pergaulan, musik, beberapa jenis olah raga, makanan lezat, dan persahabatan. ”