Now when a man has learnt Vairāgya, then comes the great period of Service. No longer does he work for anything for himself, but to carry out the Divine Will in Evolution. Has not Shrī Kṛṣhṇa said that He acts perpetually? Because, "if I do not act," He says, "all these worlds would perish." "I have nothing to gain," are His words. But they would perish, save for Him, and He goes on to say: "Let the wise man, acting with me, render all action attractive." Action is only a clog, is only a fetter, after man has gained all its fruit in experience, when it is not done for the sake of sacrifice. But when the action is consecrated to the Service of God and Man, that action becomes wings that uplift, and not fetters that clog, the advancing Spirit. And so, in the arrangement of castes that we have in India, there is one great lesson that comes out. The Shūḍra, the lowest caste, is the man who serves all. But the highest, above all castes, the Sannyāsī, what is he but the Servant of humanity, reproducing on a loftier plane the Service in which a Shūḍra is taking his first lesson down here? The Shūḍra learns service to others, and accumulates what he learns; the Vaishya learns to sacrifice material wealth in charity to others; the Kṣhaṭṭriya learns to renounce life itself in defence of others; the Brāhmaṇa learns to renounce all for knowledge, that he may teach others. Then caste has taught its lessons, and the highest of all services are the services done for the sake of sacrifice by the liberated Spirit, the Paramahamsa, the man who has gone beyond the illusion of the Separated Self. So wisely was planned the ancient order, full of true significance.