“Devotional service must not be executed for some material purpose. One should not even have a desire to merge into the Absolute Truth. One has to render such service out of love only. Ahaituki, apratihata. Devotional service must be without ulterior motives; then material conditions cannot check it. Gradually one can rise to the platform of spontaneous loving service.” (Shrila Prabhupada, Chaitanya Charitamrita, Madhya 22.109 Purport)