31.   Changes are never totally external but are part of the identification process and even of the very core of identity itself.

32.   Politically active, class conscious, joined to the world as if every soul were a soul mate, Olsen counters the very core of American writing.

33.   Researchers say chains like these are striking at the very core of the society in almost all underdeveloped countries.

34.   The question, not an easy one, goes to the very core of gardening and its differing philosophies.

35.   This issue comes to the very core of the international human rights debate.