Michael J. Fox was sitting in his Upper East Side office surrounded by Emmys and an Oscar — one he received not for his acting but for his Parkinson’s philanthropy. (“Humanitarian stuff,” he said nonchalantly.) He wore blue trousers and a T-shirt, and Adidas sneakers with no socks. His hair, years ago always perfect, was a bit disheveled, and he was in constant movement in his chair, a hallmark of the Parkinson’s disease that has defined half of his life.