Text 47] Instructions for Civilized Human Beings
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pravṛttam —inclination for material enjoyment;  ca —and;  nivṛttam —cessation of material enjoyment;  ca —and;  dvi-vidham —these two varieties;  karma —of activities;  vaidikam —recommended in the  Vedas ;  āvartate —one travels up and down through the cycle of  saṁsāra ;  pravṛttena —by an inclination for enjoying material activities;  nivṛttena —but by ceasing such activities;  aśnute —one enjoys;  amṛtam —eternal life.
TRANSLATION
According to the  Vedas , there are two kinds of activities— pravṛtti  and  nivṛtti .  Pravṛtti  activities involve raising oneself from a lower to a higher condition of materialistic life, whereas  nivṛtti  means the cessation of material desire. Through  pravṛtti  activities one suffers from material entanglement, but by  nivṛtti  activities one is purified and becomes fit to enjoy eternal, blissful life.
PURPORT
As confirmed in  Bhagavad-gītā  (16.7),  pravṛttiṁ ca nivṛttiṁ ca janā na vidur āsurāḥ : the  asuras , nondevotees, cannot distinguish between  pravṛtti  and  nivṛtti . Whatever they like they do. Such persons think themselves independent of the strong material nature, and therefore they are irresponsible and do not care to act piously. Indeed, they do not distinguish between pious and impious activity.  Bhakti , of course, does not depend on pious or impious activity. As stated in  Śrīmad-Bhāgavatam  (1.2.6):
sa vai puṁsāṁ paro dharmo 
    yato bhaktir adhokṣaje 
    ahaituky apratihatā 
    yayātmā suprasīdati
“The supreme occupation [ dharma ] for all humanity is that by which men can attain to loving devotional service unto the transcendent Lord. Such devotional service must be unmotivated and uninterrupted in order to completely satisfy the self.” Nonetheless, those who act piously have a better chance to become devotees. As Kṛṣṇa says in  Bhagavad-gītā  (7.16),  catur-vidhā bhajante māṁ janāḥ sukṛtino 'rjuna : “O Arjuna,