Pradyumna: "Above and beyond all this are specific directions for spiritual realization. Regulated knowledge involves a gradual raising of the living entity to the spiritual platform, and the highest spiritual realization is to know that the Personality of Godhead is the reservoir of all spiritual tastes, or rasas."
Prabhupāda: So this is called pravṛtti and nivṛtti. Pravṛtti means the living entity has come here to enjoy this material world. This is called pravṛtti. And the other side is nivṛtti. Nivṛtti means become detached to material life. So long he'll be attached to the materialistic way of life, there is no question of liberation. He will be more and more entangled. According to his mind, he will get a particular type of body, material body. And there are 8,400,000 species of body.
So as soon as one gets the body, he becomes under the laws of the material nature, and the material nature means under the laws, stringent laws, threefold miserable condition, that will continue. Therefore the Vedic literature, they gives us opportunity to gradually renounce. Pravṛttir eṣā bhūtānāṁ nivṛttis tu mahā-phalām. That is a pravṛtti, inclination. But a Vedic student is trained up in such a way that ultimately he becomes renounced or detached from this material entanglement.