One who is intelligent, they should refrain from this sensual enjoyment of this material body, which is flickering, which is not in essence, and should seek such enjoyment of spiritual life. That is called rāsa-līlā. You have heard about Lord Kṛṣṇa's rāsa-līlā. That is not ordinary exchange of feelings of this material body. That is exchange of feelings of the spiritual body. So sukham ātyantikaṁ yat tad buddhi-grāhyam (BG 6.21).
One has to use his intelligence to understand what is real happiness. Foolish man cannot understand what is real happiness. Intelligent. So as soon as one becomes intelligent . . . the next śloka will describe it. Now, vetti yatra na caivāyaṁ sthitaś calati tattvataḥ. One who does not know what is real happiness, they are seeking happiness in this material world.
There is a nice story. A man, a friend . . . was advised by his friend that "If you chew sugarcane, oh, it is very nice, sweet." The friend who was advised to chew sugarcane, he had no experience what is sugarcane. So he asked his friend, "Oh, what is the sugarcane?" The friend suggested, "It is just like a bamboo log." So the foolish man began to chew all kinds of bamboo log. Now, how he can get the sweetness of the sugarcane? Similarly, we, we are trying to have happiness and pleasure, but we are trying to derive happiness, pleasure, eschewing this material body.