(Prabhupada's lecture - Śrīmad-Bhāgavatam 1.16.6 - Los Angeles, January 3, 1974)
So any big scientist, big philosopher, they may be very, very big, big men, but the so-called scientist cannot increase even one day's life. That is not possible. You have to die. The moment you are destined to die, you must die. So not only day, even a moment you cannot increase. A moment you cannot increase. Therefore Cāṇakya Paṇḍita says, āyuṣaḥ kṣaṇa eko 'pi. We have got a certain duration of life. Now, what is gone in this life... Suppose yesterday was 2nd January, 1974. This morning it is finished. Now it is 3rd January, 1974. Can you bring 1973, 1974, 2nd January, again? No, that is not possible. It is gone forever. It is gone forever. Similarly, every moment of our life is going, forever, never to come back. Cāṇakya Paṇḍita says na labhyaḥ svarṇa-koṭibhiḥ. If you request that "Now my age is, say, seventy-eight years." If I request somebody that "I will give you millions of dollars, make my life seventy-seven years," that is not possible. Not seventy-seven years, even a moment. Therefore Cāṇakya Paṇḍita says that every moment of life is so valuable that you cannot get back it even offering hundreds and thousands and millions of dollars. That is not possible.
So if that moment is wasted for nothing, just imagine what is your loss. A thing which you cannot get back by paying millions of dollars, if that is lost unnecessarily, so how much loss you are suffering just imagine. This is material calculation. Why we keep some valuable things, some jewel, very carefully? Because we know, "If I lose this jewel, I will lose so much money." Similarly, we should always consider that. The modern civilization, rascal civilization, they do not know how to utilize life. So many days, so many hours, they are simply wasting, simply wasting. It is said that the sunrise and sunset, during this period, the sun's business is to take away the duration of our life, sunrise and sunset. That means twelve hours or thirteen hours which is gone between the sunrise and sunset...This sun's business is to take away the portion, the fixed up duration of life which I have been given. That is, some of it, is taken away. The same example. Just like you have got a fixed balance in the bank. If you draw even ten pence, ten shillings, that means it is taken away. You have to replace it. But replacing is not possible. Bank balance you can replace. But the balance... Suppose you have passed... I have passed... Suppose if I live for eighty years or ninety years or hundred years. So this seventy-eight years is already taken away. It cannot be replaced. You cannot make the bank balance or the duration of..., again complete. That is not possible.