Here in the material world everyone is inclined to gratify the senses. This is material world. Everyone is trying. Āhāra-nidra-bhaya-maithunaṁ ca (Hitopadeśa 25). The best type of āhāra-nidra. Even in the human form of life they are also trying for the same thing as cats and dogs are trying. The cats and dogs, they are also trying to find out where it is, food, where sleeping comfort, where sex life and where defense. If the human form of life is also utilized for this purpose, pravṛtti-mārga, then it is, as I was talking in the park, it is just like using sandalwood for burning fuel. There is distinction even in wood. There are so many jungle wood, we can use it for cooking. But if the sandalwood, which is so valuable . . . if we do not know what is the value of sandalwood, if we use it for cooking and burning . . . similarly, if we use this human form of life exactly like the cats and dogs, simply for sense gratification, then we are committing suicide.
The whole Vedic civilization means how to utilize this human form of life for better purposes. Even modern scientific point of view . . . not scientific, but they say. Accepting their version . . . just like Darwin's theory: by evolution you come to the human form of life. Accepting that from monkey one becomes a human being, so what is after this form? That they have no information. What is the next life? If the evolution is . . . that is also accepted in the Padma Purāṇa: 8,400,000 species, forms of life, and then we come to this human form of life. Then what is next? That is the question. But they have no knowledge. They have no sense. They cannot explain what is next. And there is next life. If by evolutionary process through the channel of so many species of life, 900,000 aquatics. Jalajā nava-lakṣāni sthāvarā lakṣa . . . two millions trees and plants, then 1100,000 insects, and ten . . . one million species of birds, and then 33,000,000 species of animals, four-legged animals, paśu. And then we get this human form of life, especially civilized form of life. Then what is next? That question nobody inquires, neither there is answer by the so-called modern scientist, that what is next.