Srimad Bhagavatam Canto 12, Chapter 03, Text 27

SB 12.3.27

prabhavanti yada sattve
 mano-buddhindriyani ca
tada krta-yugam vidyaj
 jñane tapasi yad rucih
 
Translation: 
 
When the mind, intelligence and senses are solidly fixed in the mode of goodness, that time should be understood as Satya-yuga, the age of truth. People then take pleasure in knowledge and austerity.
 
Purport: 
 
The word krta means “performed” or “executed.” Thus in the age of truth all religious duties are duly performed, and people take great pleasure in spiritual knowledge and austerity. Even in the Kali-yuga, those who are situated in the mode of goodness take pleasure in the cultivation of spiritual knowledge and the regulated performance of austerity. This sublime state of existence is possible for one who has conquered sex desire.
Srimad Bhagavatam Canto 12, Chapter 03, Text 26
Srimad Bhagavatam Canto 12, Chapter 03, Text 28