"Straw" which O'Neill feels is his best piece of work, he describes as "a tragedy of human hope." It is a play of tuberculosis, and all the action takes place in a sanitorium. At the same time it is not morbid nor in any sense pathological. "My whole idea" he says "is to show the power of spiritual help, even when a case is hopeless. Human hope is the greatest power in life and the only thing that defeats death."