Book is a series of little printed signs--essentially only that. It is for the reader to supply himself the forms and colors and sentiments to which these signs correspond. It will depend on him whether the book be dull or brilliant, hot with passion or cold as ice. Or, if you prefer to put it otherwise, each word in a book is a magic finger that sets a fiber of our brain vibrating like a harp-string, and so evokes a note from the sounding- board of our soul. No matter how skillful, how inspired, the artist's hand; the sound it wakes depends on the quality of the strings within ourselves.
A book is a set or collection of written, printed, illustrated, or blank sheets, made of paper, parchment, or other various material, usually fastened together to hinge at one side. A single sheet within a book is called a leaf or leaflet, and each side of a leaf is called a page. A book produced in electronic format is known as an electronic book (e-book).
In 2010, Google estimated that there were approximately 130 million unique books in the world.

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