If you invest a dollar in sanitation solutions, the benefit will be four dollars in terms of health cost prevention, the (reduction in) number of visits you go to a doctor and in the medicines that you don't have to buy. The Prime Minister invested political time and effort (in issues like health and sanitation) and what it meant was people began picking up that story. They want to do it for Mahatma Gandhi, for their country and they felt pride in it.