Discusses the symbolic meanings of numbers.

The Monad -- Duality -- Three -- Quaternity -- Phive -- All things sixy -- The Heptad -- Eight -- The Ennead -- Ten -- Elevenses -- The twelve -- Covens and scores -- The Quadrivium -- Gnomons -- Time and space -- Babylon, Sumer, and Egypt -- Ancient Asia -- Gematria -- Magic squares -- Myth, game, and rhyme -- Modern numbers -- Zero -- Early number systems -- Place-value number systems -- Pythagorean numbers -- Examples of Gematria -- Further magic squares -- Some numbers of things.