John Locke described the mind as a cabinet; Robert Hooke called it a repository; Joseph Addison imagined a drawer of medals. Each of these philosophers was an avid collector and curator of books, coins, and cultural artifacts. It is therefore no coincidence that when they wrote about the mental work of reason and imagination, they modeled their powers of intellect in terms of collecting, cataloging, and classification.

The Mind Is a Collection approaches seventeenth- and eighteenth-century metaphors of the mind from a material point of view. Each of the book's six chapters is...