Actually, devotional service rendered to the Supreme Lord not for my satisfaction, but rendering devotional service to the Lord, the self is automatically satisfied. If I make a motive that "I shall render service to the Lord so that I will be very much satisfied…" No. No. That becomes motivated. That "I will be satisfied," that is the first consideration. There should be no motive at all. I may be satisfied, not sati…, that is not my business, but still, I'll have to serve the Lord.

(Srila Prabhupada — October 17, 1972, Vrndavana)