To carry out one's “svadharma” valiantly is the highest dharma; but what is “duty”? On this perplexing question there is a dispute of just this kind between religion and ethics. “Impenetrable is the way of karma”: the way of action is dense and intricate, so runs the Lord's word. The wise have been bewildered, and still are, in deciding what is duty and what is not, what is karma and what is not karma. “But I shall make known to you a Jñāna by which you will have no difficulty whatever in recognising the path you can practise,” he said. Here are those words, the supreme secret and the most excellent of all.