So there are different grades of sense gratification, but the point is sense gratification. The cats and dogs, the animals, they are also satisfying their senses, and the human being also engaged in the same business. The cats and dogs, they are eating to their taste; the human being is also eating to their taste. The standard may be different, but the taste is the same. Either you have sex intercourse with beautiful wife or husband or as sex intercourse between the she-dog and he-dog, the enjoyment is the same. Just like if you have got a palatable food, either you put it into a golden pot or if you put it into iron pot, the taste is the same. The taste is not different. One may think that "I am eating in golden pot; therefore I am advanced." But a learned man will say that "Whether you have changed the taste?" Either you drink something palatable in a golden pot or in iron pot or paper pot, the taste is the same. So this is called pravṛtti-mārga. Pravṛtti-mārga means advancing in sense gratification.
So there are different grades. From the animal life we come to human life, and if we like, we can go to the higher planetary system, Janaloka, Maharloka, Tapaloka. There are many planetary system above the sun. We have already discussed, above the sun... The moon planet is above the sun. The moon planet is not so near. So Kṛṣṇa says that even if you go to the highest planetary system, Brahmaloka... That is many thousands years you can live and gratify your senses to higher standard than in this... Suppose you are drinking here in golden pot; there you will get in diamond pot. That will be the change, not that the taste will change. The taste, the same. The dog's pot and man's pot and demigod's pot, within the material world, the taste is the same, and ultimately, you have to die. That's all. That you cannot stop. Nobody wants to die. He wants to enjoy life perpetually. Now the scientists are trying to live more years. So what is the use of living more years? The śāstra says, taravaḥ kiṁ na jīvanti (SB 2.3.18) . The trees they live for five thousand years or more than that. So do they not live long years? So sane man will think that "What is the use of living for five hundred or five thousand years, standing in one place?"