You will find, India, Vedic civilization is meant for this unknotting, the hṛdaya-granthi. Therefore sannyāsa is compulsory. Vānaprastha is compulsory. If you really follow Vedic principle you become student, brahmacārī, you learn everything—what is this life, what is this world, what is Kṛṣṇa, what is God, what is your relationship with Him. These studies, that is complete study. But still, if you want to be knotted by hṛdaya-granthi: gṛhastha, a concession, "All right." Puṁsaḥ striyā mithuna. Mithuna, that concession is for sex life. Gṛhastha life is a concession given for enjoying sex life. Otherwise, there is no need of gṛhastha life. Therefore there were many brahmacārīs, akhanda-brahmacārī, never married in life. Many. But that is not possible at the present. But there is training. The brahmacārī is taught that this is the position, "Don't be knotted with this material world." But still, if he cannot do that, then with the permission of the spiritual master he accepts a wife. That is gṛhastha life. But that also not for many years. Say for twenty-five years. After twenty-five years he will remain a student brahmacārī, then you accept one wife according to religious ritualistic ceremony. But no illicit sex. That is not allowed. Bachelor daddy is not allowed. That is very dangerous.
So kāmām, dharma-viruddho kāmām aham asmi, Kṛṣṇa says, that . . . (break) . . . even without wife and everything. Then you take sannyāsa. That is the stage of hṛdaya-granthi-bhedanam. Hṛdaya-granthi-bhedanam. Not that up to the last point of death you are attached to a family and wife and children. That is animal life. That is not human life. Human life, you must try to unknot this hṛdaya-granthi, man and woman. Hṛdaya-granthi-bhedanam. That is self-realization.
So this Sāṅkhya philosophy described by Kapiladeva is very scientifically described, and if we try to assimilate it, then our life will be successful.