"The most perplexing of Samkhya system is the problem of relation between Purusa and Prakriti. Prakriti evolves a world full of woe and desolation to raise the soul from its slumber. The unrolling of the tragedy of the world is said to be necessary for the self, which remains inactive though it sees all that is presented to it...The evolution of Prakriti implies spiritual agency. But the spiritual centers admitted by Samkhya are incapable of exerting any direct influence on Prakriti; the Samkhya says that the mere presence of Purusas excited Prakriti to activity and development. Though Purusa is not endowed with creative might, Prakriti, which produces the manifold universe, is so on account of its union with Purusa. Prakriti is blind, but with the guidance of Purusa it produces the manifold universe. The union of the two is compared to a lame man of good vision mounted on the shoulders of a blind man of sure foot."