In the Bhagavad-gita, in Sri Krsna's discourse on the ksetra and the ksetra-jna, it is clearly stated that the ksetra-jna is the living entity who knows his field of activities. The living entities in the material world are forgetful of their eternal relationship with the Supreme Personality of Godhead. This forgetfulness is called avidya, or nescience. The avidya-sakti, the avidya potency of the material world, provokes fruitive activity. Although this avidya-sakti (material energy, or nescience) is also an energy of the Supreme Personality of Godhead, it is especially intended to keep the living entities in a state of forgetfulness. This is due to their rebellious attitude toward the Lord. Thus although the living entities are constitutionally spiritual, they come under the influence of the potency of nescience. How this happens is described in the following verse.