*Gita Quotes*
purusah prakrti-stho hi
bhunkte prakrti-jan gunan
karanam guna-sango 'sya
sad-asad-yoni-janmasu 13-22

The living entity in material nature thus follows the ways of life. This is due to his association with that material nature. Thus he meets with good and evil amongst various species.

*Gita Quotes*
karya-karana-kartrtve
hetuh prakrtir ucyate
purusah sukha-duhkhanam
bhoktrtve hetur ucyate 13-21

Nature is said to be the cause of all material activities and effects, whereas the living entity is the cause of the various sufferings and enjoyments in this world.

*Gita Quotes*
prakrtim purusam caiva
viddhy anadi ubhav api
vikarams ca gunams caiva
viddhi prakrti-sambhavan (chap 13-20)

Material nature and the living entities should be understood to be beginningless. Their transformations and the modes of matter are products of material nature.

*Gita Quotes*
iti ksetram tatha jnanam
jneyam coktam samasatah
mad-bhakta etad vijnaya
mad-bhavayopapadyate 13-19

Thus the field of activities [the body], knowledge and the knowable have been summarily described by Me. Only My devotees can understand this thoroughly and thus attain to My nature.

*Gita Quotes*
jyotisam api taj jyotis
tamasah param ucyate
jnanam jneyam jnana-gamyam
hrdi sarvasya visthitam 13-18

He is the source of light in all luminous objects. He is beyond the darkness of matter. He is knowledge and He is the goal of knowledge. He is situated in everyone's heart.