Significant written expositions of freedom and other concepts

A book is both a usually portable physical object and the body of immaterial representations or intellectual object whose material signs—written or drawn lines or other two-dimensional media—the physical object contains or houses. As a physical object, a book is a stack of usually rectangular pages. As an intellectual object, a book is prototypically a composition of such great length that it takes a considerable investment of time to compose and a still considerable, though not so extensive, investment of time to read.

The introductory paragraph uses material from the Wikipedia article "Book" as of 13 Nov 2018, which is released under the Creative Commons Attribution-Share-Alike License 3.0.