Even a modernist builder like Steve Hermann in Los Angeles, who makes sleek multimillion-dollar houses for buyers like Christina Aguilera, includes acres of shelves in his high-end spec houses. Mr. Hermann designed a glassy Neutra-like house with a 60-by-14-foot shelving system, which has room for 4,000 books, he said.  “But who has 4,000 books?” he said.
--New York Times, "Selling A Book By Its Cover"