Suppose one has got one hundred years age to live. Nowadays nobody lives for one hundred years—utmost eighty years or ninety years, very rarely. My grandmother lived for ninety-six years. My father lived for eighty-four years. I do not know how long I shall live, but still I am living. But duration of life in this age is gradually decreasing. You are all student of the university, but there is no science how you can increase the duration of life or how you can stop death. That is not possible.
Death . . . birth, death, old age and disease—these are the four problems of our life. Nobody wants to die, but death is sure. We must die. Nobody wants to take birth, but there is birth. Now there are so many contraceptive methods for checking birth. But still, the population of the whole world is increasing. So birth, death, old age. Nobody wants to become old, everyone wants to remain young and fresh, but old age overcomes. Similarly, disease. There are scientific advancement of knowledge, you have got very effective medicines, but there is no science to stop disease or to stop death. These are the actual problems.