In plain words
Not money and gold, goods and vehicles. Not at all. The grace of God alone is its root cause. A great many things happen without any effort of man. What effort does a man make for his heart to beat? What effort does a man make to breathe in and breathe out? What effort does he make for the blood circulation to go on inside the human body? None of these happens by effort. These happen only by the will of God. So they concluded that there is nothing beyond the will of God. O man!
They set the measure at a hundred years, but do not trust that word in your heart. In childhood, or in youth, or in old age, or in extreme old age, in the village, or in the forest, or in the midst of the waters, when it will leave, no one knows. While life remains, one must know oneself.
What we must learn is this: while life is still in us, we must come to know God. Do not postpone at all this matter of some day, sometime. No one can cancel it. This happens only by the grace of God. So the great ṛṣis went on teaching, Pray to God. Where does this life dwell? Nīlatoyadamadhyasthā vidyulekheva bhāsvaraḥ … At our back we have a spinal cord made up of 33 rings. In it, between 9 and 12, there is what is called the suṣumnā nāḍī. That moves like a … creeper of lightning. Only when it strikes in that threatening way does the whole body function. Some say that our whole life is in the heart. The heart is only the main switch. But life is not there. The doctors take out the heart, put in another heart and do all sorts of things, and just then this life departs. They only change the main switch. But the heart works only by its power there in the spinal column.
People have come to think of the Vedic sages of that age as fools who knew nothing, as men with no knowledge at all, as innocents who knew no science.