It is not, Let your good works shine, but Let your light shine.
Let it be the genuine love of your hearts, taking form in true deeds, not the doing of good deeds to prove that your opinions are right. If you are thus true, your very talk about the truth will be a good work, a shining of the light that is in you. A true smile is a good work and may do much to reveal the Father who is in heaven. But the smile that is put on for the sake of looking right, or even for the sake of being right, will hardly reveal him because it is not like him.
— George MacDonald, Your Life in Christ, p. 210