This is one of my favorite quotes. I always remind myself that Jesus never asked to be repaid when he healed people. He never had any ulterior motives. There was no dubiousness to Him; He just truly loved people and had a compassionate heart.
It's easy to help people when everyone is watching. How about doing something kind and telling nobody? There's a verse in the Bible, Matthew 6:3 that says, "But when you give to the needy, do not let your left hand know what your right hand is doing." I think that pretty much sums it up. Give for the sake of giving, to show the world who Jesus is. Don't set off the trumpets and cheerleaders.