Srimad Bhagavatam Canto 11, Chapter 29, Text 22

SB 11.29.22

esa buddhimatam buddhir
 manisa ca manisinam
yat satyam anrteneha
 martyenapnoti mamrtam
This process is the supreme intelligence of the intelligent and the cleverness of the most clever, for by following it one can in this very life make use of the temporary and unreal to achieve Me, the eternal reality.
As described in this chapter, one who desires personal prestige in the Lord’s service cannot be considered intelligent and clever. Similarly, one who is anxious to become a sophisticated transcendental philosopher is not the most intelligent. Nor is one who is expert in accumulating money. The Lord here states that the most intelligent and clever person is the devotee who offers his temporary, illusory material body and possessions to Him with love and without personal motivation. The devotee thus obtains the eternal Absolute Truth. In other words, real intelligence is to actually surrender to Lord Krsna, without personal desire or duplicity. That is the Lord’s opinion.
Srimad Bhagavatam Canto 11, Chapter 29, Text 21
Srimad Bhagavatam Canto 11, Chapter 29, Text 23