Reason and morality are the two most powerful weapons in the armoury of a reformer. To deprive him of the use of these weapons is to disable him for action. How are you going to break up caste, if people are not free to consider whether it accords with reason? How are you going to break up caste, if people are not free to consider whether it accords with morality? The wall built around caste is impregnable, and the material of which it is built contains none of the combustible stuff of reason and morality