We give most sincerely when we do not expect even a 'Thank You' for our gifts. The joy of giving comes from a heart overflowing with so much love for others, it simply rejoices in the chance and the privelege of being able to give to others. And no personal credit for such love fits an ever-joyful giver, but a gratitude towards God for chosing us as His instruments in making others experience His love for them.