The Caitanya-caritāmṛta kaṛacā, the author of Caitanya-caritāmṛta, he has distinguished between kāma and prema. Kāma means lusty desires or sex desires. Generally it is meant, sex desires. So he has very simplified the matter very much. Ātmendriya-prīti-vāñchā—dhare. . ., nāma dhare. . ., prema. . ., tāre. . ., bali dhare. . ., nāma kāma (CC Adi 4.165), like that. Kṛṣṇendriya-prīti-vāñchā dhare nāma prema, and ātmendriya-prīti-vāñchā—dhare nāma kāma. They. . . Actually, senses are there for satisfaction. That's a fact. Otherwise, why the senses are there? Just like the smell is there, and the nose is there. So smell is there for satisfaction of the senses. For the smell, for the nose, nostril, the beautiful flower is there, or beautiful. . ., anything beautiful. To the man, woman is beautiful; to the woman, man is beautiful. So the eyes are there, and the beautiful things are there. That is arrangement. That is development of this nature. As soon as. . . It is. . . It is coming from the fire. The. . . That we have already described. The fire is the origin of beauty, and the fire is the origin of eyesight. The loss of eyesight means there is less fiery element. Loss of appetite means there is less of fiery elements. In the Āyurvedic treatment it is called agni-māndyam. So these are transformation of the fire. Similarly, the smell is transformation of the rasa, taste.
How subtle things are going on, that is described in the Sāṅkhya philosophy presented by Kapiladeva, but we do not understand practically how things are going on. We are simply accepting the words that "By transformation of this thing, this thing is coming out so much." Neither it is possible to make experiment. Maybe; but scientists can take advantage of this Sāṅkhya philosophy. So you may experiment or not. That doesn't matter. Things are going on. Prakṛteḥ kriyamāṇāni guṇaiḥ karmāṇi sarvaśaḥ, ahaṅkāra-vimūḍhātmā manyate. . . (BG 3.27). What is called?