The gods once imagined that they were able to get victory over the demons because of their own prowess. When they were celebrating the victory, a deity appeared before them and cast a blade of grass on the ground. It asked Agni (God of fire) to burn it; but he could not. It challenged Vayu (God of Air) to lift it, but he could not. It provoked Varuna (God of Water) to wet it, but, in spite of his best efforts, he could not. Then when their pride had been pricked, the deity taught them the Brahma Vidya (science of Brahman), which reveals the inner source of all strength. This is no ordinary story; Agni is the presiding deity of vaak (speech) and so it tells us that speech has to be humble, that it derives its power only from the basic Universal Principle. Vaayu is prana (the vital air). Humility in behaviour and practice are all that count, especially in Sadhana.(Divine Discourse, Aug 17, 1964.)