In plain words
Through the fruit of merit from who knows how many births, this human birth is gained. Such a human birth, once gained, must be set on the path where we make it fruitful. Of just this, Śaṅkara's disciples said, “Punarapi jananaṃ, punarapi maraṇaṃ.” Ah, the hardships of being born and dying, and the hardships the embryo goes through in the mother's womb to take on its form, are beyond all bearing. You do not know that state. Truly, at the time it is changing into a form, the embryo goes through the torments of hell. Such a body, having suffered so much and borne so many trials to see the world with its own eyes, does not enter the sacred path but defiles itself: truly, that is a great disgrace to humanness itself. Every human being has come into the world for a divine work, to show forth an ideal. In the great machine called the world, each one is like a part. A screw, a bolt, a nut: one way or another, every human being too is a part in this factory called the world. In our own view, we think our life is something useless, something like a small pin. But the whole life of the machine lies within that very small pin. A small example of this. A big train sets out and goes along at great speed. But if lakhs of people went and held on to it to stop it, it would only bring danger to them; the train would not consent to stop. But the moment the driver in the engine room applies the small pin called the brake, the train stops. The big train running so fast, which lakhs of people holding on to it could not stop, stopped through that small pin. Through good feelings in a human being's mind there is the power to put a stop to the wickedness, injustice, wrongdoing, misconduct and Asatya of this world. It is beyond telling. So it is a noble trait for every person, too, to think of himself as a useful power that seeks the welfare of the world. We need not fear in the least the moment when life leaves this body.