A work of art may be beautiful to look at, it may have great skill in it, but with it the mind of the artist is working, and the effect that the picture will have is not what it suggests outwardly, but what it speaks aloud as the voice of its heart. In every picture, in every statue, in every artistic construction one can see this; there is a voice hidden in it continually telling for what purpose the work of art was created. Sometimes an artist is unaware of what he is creating; he is following his imagination. He may be working against his own work of art; he may be bringing about an effect which he had not desired for himself nor for the person to whom the work of art is to be given.