Animals are satisfied if they can eat something and sleep and have some sex life and some defense. That's all. There is no defense, actually, because nobody can protect himself from the hands of the cruel death. Therefore Hiraṇyakaśipu wanted to live forever, and he underwent severe austerities. The so-called scientists are also saying that, "By scientific method we shall stop death." This is also another crazy utterances. That is not possible. You may make very much advance in scientific knowledge, but there is no solution, by your so-called science, of these four problems: birth, death, old age and disease. There is no solution.
Therefore, one who is intelligent, he'll be eager how to solve these four prime problems. That is intelligence. Because nobody wants to die. "Why shall I die?" But there is no remedy. I have to die. The . . . everyone is very much anxious to stop increase of population by so many contraceptive method. But still, birth is going on. So there is no stoppage of death.
There is no stoppage of birth. And you might have invented very nice medicine by your scientific method, up-to-date medicines, but you cannot stop the disease. Just discover a tablet that you take this tablet there will be no more any disease. That is not possible. Disease will be there. You can invent some better medicine. That is . . . that is the way. Therefore in the Bhagavad-gītā it is said that:
- janma-mṛtyu-jarā-vyādhi-
- duḥkha-doṣānudarśanam
- (BG 13.9).
One might think that he has solved all the problems of his life, but where is the solution of these four problems: birth, death, old age and disease? That is intelligence.