The unmanifest Supreme Personality merely glances at nature. Material nature, which is under the control of the Supreme Lord, then assumes the forms of causes and effects and carries out the creation, maintenance and destruction of the material world. Even though the puruṣa and prakṛti appear nondifferent to superficial vision, there is an ultimate difference between the two. Material creation is produced from the modes of prakṛti, and its quality is transformation. The living entities who are inimical to the Supreme Personality of Godhead take on and give up various kinds of material bodies through the agency of their own material work. But those who are ignorant of the self, because of being bewildered by illusion, do not understand this. The mind, which is filled with ideas of fruitive work, simply takes the senses with it from one body to another, while the soul follows along. Nevertheless, on account of being totally absorbed in sense gratification, one cannot remember his past existence.