For those of us of a certain age — no need to put a number on it, thank you -- the word "library" still conjures forth memories of solid wood cabinets filled with hand-typed cards, each pointing to a book housed on imposing, steel-blue shelves. All those books -- representing centuries of learning -- took up a lot of space and gave the library a slightly intimidating air. It was a quiet, austere space devoted to solitary thought and research.