This is an excerpt form a lecture Srila Prabhupada gave on the Bhagavad-gita 2.13 on March 11,1966 in New York.

…material pleasure cannot give us pleasure. It is our mistake. But because we have no information of the spiritual pleasure and because we are conditioned by this material body, therefore we seek pleasure through matter. Now we have to raise ourself from this position. Then we can get unlimited pleasure. We want pleasure, but we do not want such pleasure which ends. We want nonending pleasure. That is our heart’s desire. But in material pleasure we cannot have that bliss. Even if you take a very good foodstuff, just delicious, still, after taking some portion of it, you will feel yourself satiated. Then that very foodstuff, you’ll say, “No, no, I don’t want any more.” Because that ends. So that is not real pleasure. Real pleasure is defined: ananta. Ananta means that which has no end. So that pleasure you can have only when you are spiritually realized soul. That is possible. That is possible. We are reading all these scriptures, Bhagavad-gita, Śrīmad-Bhagavatam, and there are so many Vedic literatures that if anyone wants to have spiritual life, there is complete facility. There is complete facility.