Lord Brahmas being captivated by the charms of his daughter and Lord Sivas being captivated by the Mohini form of the Lord are specific instances which instruct us that even great demigods like Brahma and Lord Siva, what to speak of the ordinary conditioned soul, are captivated by the beauty of woman. Therefore, everyone is advised that one should not freely mix even with ones daughter or with ones mother or with ones sister, because the senses are so strong that when one becomes infatuated, the senses do not consider the relationship of daughter, mother or sister. It is best, therefore, to practice controlling the senses by performing bhakti-yoga, engaging in the service of Madana-mohana. Lord Krsnas name is Madana-mohana, for He can subdue the god Cupid, or lust. Only by engaging in the service of Madana-mohana can one curb the dictates of Madana, Cupid. Otherwise, attempts to control the senses will fail.