Material varieties cannot give us full satisfaction. Therefore you want change—change, another change, another change. Punaḥ punaś carvita-carvaṇānām (SB 7.5.30). Here in the material world we are simply chewing the chewed. Once chewed and thrown it away, again somebody is coming, chewing. So spiritual variety is not like that. Spiritual varieties is ānandāmbudhi-vardhanam. The more you are attached to spiritual varieties, it is just like ocean. An ocean does not increase, but spiritual varieties are said they are increasing. Now just like here you have got the Arabian Sea. It is not increasing. It would have increased, then Bombay town would have been finished long ago. So it is not increasing. It has got a certain limit. You go to the beach, you see sudden, "No, no more than." But it is compared with ānandāmbudhi, the ocean of bliss, increasing, vardhanam. Ānandāmbudhi-vardhanam.
The more you enter into the spiritual bliss, the more you become joyful. That is spiritual. Spiritual . . . just like these boys, these girls, they are chanting Hare Kṛṣṇa. Had it been hackneying, how long they would have chanted? No. That is not possible. Unless it is spiritual, nobody can be satisfied simply by chanting Hare Kṛṣṇa, Hare Kṛṣṇa. You take any other word, "Mr. John, Mr. John, Mr. John," how long you will chant? After chanting for half an hour you will be fed up. But this is ānandāmbudhi-vardhanam. The more you chant, the more you become spiritually advanced. This is called ānandāmbudhi-vardhanam. Otherwise, how one can be satisfied simply by chanting, chanting Hare Kṛṣṇa? They are not mad; they are not foolish. They are human being. And how they have given up everything simply by chanting if it is not ānandāmbudhi-vardhanam, if it is not increasing in spiritual blissfulness? Practical. They have forgotten everything.