Two pictures of children and adults

Mary with child. From the church San Apollinare Nouvo in Ravenna, North Italy, made about 550. http://www.flickr.com/photos/mymuk/3258580385/ 

Domenico Ghirlandajo (1440). The old man and the child, Louvre, Paris. http://metalab.unc.edu/wm/paint/auth/ghirlandaio/old-man.jpg