"Caste was originally an arrangement for the distribution of functions in society, just as much as class in Europe, but the principle on which the distribution was based in India was peculiar to this country.... A Brahmin was a Brahmin not by mere birth, but because he discharged the duty of preserving the spiritual and intellectual elevation of the race, and he had to cultivate the spiritual temperament and acquire the spiritual training which could alone qualify him for the task. The Kshatriya was a Kshatriya not merely because he was the son of warriors and princes, but because he discharged the duty of protecting the country and preserving the high courage and manhood of the nation, and he had to cultivate the princely temperament and acquire the strong and lofty Samurai training which alone fitted him for his duties. So it was with the Vaishya whose function was to amass wealth for the race and the Sudra who discharged the humbler duties of service without which the other castes could not perform their share of labour for the common good.... Essentially there was, between the devout Brahmin and the devout Sudra, no inequality in the single virat purusa [Cosmic Spirit] of which each was a necessary part. Chokha Mela, the Maratha Pariah, became the Guru of Brahmins proud of their caste purity; the Chandala taught Shankaracharya: for the Brahman was revealed in the body of the Pariah and in the Chandala there was the utter presence of Shiva the Almighty.... Caste therefore was not only an institution which ought to be immune from the cheap second-hand denunciations so long in fashion, but a supreme necessity without which Hindu civilisation could not have developed its distinctive character or worked out its unique mission. But to recognise this is not to debar ourselves from pointing out its later perversions and desiring its transformation. It is the nature of human institutions to degenerate, to lose their vitality, and decay, and the first sign of decay is the loss of flexibility and oblivion of the essential spirit in which they were conceived. The spirit is permanent, the body changes; and a body which refuses to change must die. The spirit expresses itself in many ways while itself remaining essentially the same but the body must change to suit its changing environments if it wishes to live. There is no doubt that the institution of caste degenerated. It ceased to be determined by spiritual qualifications which, once essential, have now come to be subordinate and even immaterial and is determined by the purely material tests of occupation and birth. By this change it has set itself against the fundamental tendency of Hinduism which is to insist on the spiritual and subordinate the material and thus lost most of its meaning. The spirit of caste arrogance, exclusiveness and superiority came to dominate it instead of the spirit of duty, and the change weakened the nation and helped to reduce us to our present conditions."