Simply by chanting Hare Kṛṣṇa mantra, you'll get all perfection of life. So either . . . Narottama dāsa Ṭhākura sings, gṛhe vā vanete thāke, 'hā gaurāṅga' bole dāke. So don't be afraid that "Because we are in this age we cannot be trained up; it is very difficult." But we can very easily chant Hare Kṛṣṇa mahā-mantra. That is a special concession of this age. Just like these children were dancing and chanting. And it is the duty of the parents to train the children in such a way they get liberty in this very life. Father, mother, they should think of their innocent children, that "This boy, this child, has come to us. Now let us train him in such a way that he will get liberty, no more birth and death." This is real responsibility of father and mother. Pitā na sa syāj jananī na sa syāt, guru . . . (SB 5.5.18). Everyone's duty should be how to give relief the living entities from these clutches of birth and death. That is ideal civilization.
So Prahlāda Mahārāja says if you don't train up in the beginning, then ko gṛheṣu pumān saktam ātmānam ajitendriyaḥ. Ātmānam ajitendriyaḥ, the whole training is to control the senses, and the most powerful sense is the tongue. Sense control begins from the tongue. Bhaktivinoda Ṭhākura has given you the song, tār madhye jihvā ati lobhamoy sudurmati. Bhaktivinoda Ṭhākura gives a description that śarīra avidyā-jāla joḍendriya tāhe kāl. This body is the encagement. We are in the prison of this material world. How we are imprisoned? We have been given a material body. This is imprisonment. Śarīra avidyā-jāl. And we are very happy to keep this body very comfortably without knowing the aim of life. That is avidyā-jāl, a network of ignorance. Śarīra avidyā-jāl, and the senses are our greatest enemies. Unless we control the senses, we are put into this avidyā-jāl, network of . . . And out of all the senses, Bhaktivinoda Ṭhākura says, tā'ra madhye jihvā—jihvā means tongue—jihvā ati, lobhamoy sudurmati. It is very greedy.