They are very much proud of this body. Why? Alpa-buddhayah, it is said, "less intelligent." Less intelligent. So why he has become less intelligent? That is described in this verse, kamam asritya. His basic principle of life is lusty desire, asritya. He has taken shelter of principally the lusty desire, kamam asritya.
Lecture on Bhagavad-Gita 16.10, Hawaii, 6 February, 1975