If you want to be happy, if you want to be peaceful, if you want to be elevated again to your original, constitutional position, then you take to Kṛṣṇa consciousness and be happy.
-Lecture on SB 1.7.2-4 - Durban, October 14, 1975

धर्मस्य ह्यापवर्ग्यस्य नार्थोऽर्थायोपकल्पते ।
नार्थस्य धर्मैकान्तस्य कामो लाभाय हि स्मृत: ॥ ९ ॥
All occupational engagements are certainly meant for ultimate liberation. They should never be performed for material gain. Furthermore, according to sages, one who is engaged in the ultimate occupational service should never use material gain to cultivate sense gratification.
-Shrimad Bhagvatam Canto 1 Chapter 2 Verse 9