We have described avidyā and its special forms as the kleśas, from which also proceed the actions virtuous and vicious, which in their turn again produce as a result of their fruition, birth, life and experiences of pleasure and pain and the vāsanās or residues of the memory of these experiences. Again every new life or birth is produced from the fructification of actions of a previous life; a man is made to perform actions good or bad by the kleśas which are rooted in him, and these actions, as a result of their fructification, produce another life and its experiences, in which life again new actions are earned by virtue of the kleśas, and thus the cycle is continued. When there is pralaya or involution of the cosmical world-process the individual cittas of the separate purushas return back to the prakṛti and lie within it, together with their own avidyās, and at the time of each new creation or evolution these are created anew with such changes as are due according to their individual avidyās, with which they had to return back to their original cause, the prakṛti, and spend an indivisible inseparable existence with it. The avidyās of some other creation, being merged in the prakṛti along with the cittas, remain in the prakṛti as vāsanās, and prakṛti being under the influence of these avidyās as vāsanās creates as modifications of itself the corresponding minds for the individual purushas, connected with them before the last pralaya dissolution. So we see that though the cittas had returned to their original causes with their individual nescience (_avidyā_), the avidyā was not lost but was revived at the time of the new creation and created such minds as should be suitable receptacles for it. These minds (buddhi) are found to be modified further into their specific cittas or mental planes by the same avidyā which is manifested in them as the kleśas, and these again in the karmāśaya, jāti, āyush and bhoga, and so on; the individual, however, is just in the same position as he was or would have been before the involution of pralaya. The avidyās of the cittas which had returned to the prakṛti at the time of the creation being revived, create their own buddhis of the previous creation, and by their connection with the individual purushas are the causes of the saṃsāra or cosmic evolution—the evolution of the microcosm, the cittas, and the macrocosm or the exterior world.