There is also a balance between pure charm and humanity when he focuses on his most persistent theme, the family unit. (impulsegamer.com)
In fact, a few persistent themes appear in the broad literature of educational theory, philosophy and theology. (religion-online.org)
A second persistent theme of the biography is the extraordinary affinity between Graham's personality and ideals on one hand and American middle - class values on the other. (religion-online.org)