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 are trying to have happiness and pleasure, but we are trying to derive happiness, pleasure, eschewing enjoying this material body.