So the endeavor should be how to become free from this material existence and come to our spiritual platform. That should be the endeavor of human life. The cats and dogs, they have no such advanced consciousness. They cannot try for it. They are satisfied with this material body and material senses. But in the human form body there is chance to understand that these senses, this physical formation of the body, is false, or temporary, or false in this sense that it is not my original body. Original body is within this material body. That is spiritual body. Asmin dehe dehinaḥ. Dehino 'smin, tathā dehāntara-prāptiḥ (BG 2.13), asmin dehinaḥ. So the spiritual body is actually the body, and this material body is covering. It is explained in different way in the Bhagavad-gītā. Vāsāṁsi jīrṇāni yathā vihāya (BG 2.22). This material body is just like dress. The dress... I am putting on the shirt, you are putting on the shirt and coat. That is not very important thing. The important thing is the body within the shirt. Similarly, this material body is simply outward covering of the spiritual body by physical atmosphere, but real body is within. Dehino 'smin yathā dehe (BG 2.13). This external, physical body is called deha, and the owner of this deha is called dehī, "one who possesses this deha." That we have to und... This is the first instruction in the Bhagavad-gītā.
So one should be inquisitive to know, "How this physical body has come into existence, covering myself, the spiritual body, ahaṁ brahmāsmi?" So to understand this science, Kapiladeva is explaining the physical Sāṅkhya philosophy, how things are developing. To understand that... The same thing: to understand the simple thing, that "I am not this body. The body has developed from the soul." Therefore we challenge the material scientists. They say that the soul has developed from the body. No. Soul has not developed from the body, but the body has developed from the soul. Just the opposite. The material scientists, they think that combination of these physical elements creates a situation where is..., when there is living, life symptoms. No. That is not. The real is that, fact is, that the spirit soul is there. They are wandering all over the universe, brahmāṇḍa brahman. Brahmāṇḍa means all over the universe. The spirit soul is sometimes in one species of life; sometimes he's another species of life. Sometimes he is in this planet, sometimes another planet. In this way, according to his karma he is wandering. That is his material life. So ei rūpe brahmāṇḍa bhramite (CC Madhya 19.151). He is loitering, wandering without any aim. "What is the aim of life? Why I have put into this condition, accepting this material body, the source of all miseries?"—these questions should be asked. This is called brahma-jijñāsā. And that should be answered properly. Then our life will be successful. Otherwise it is as useless as the body of a cat or a dog—no understanding, mūḍha. Mūḍha.