Divine Decan

Since the numerical terms after 10 are simply outgrowths of the decad and since, “clearly and indisputably,” the ordered and the finite take precedence over the unlimited and infinite, it follows thata thorough analysis of the properties of the first ten numbers will reveal not only the whole nature of numbers, but also the pattern of the universe as it exists in the mind of God.

Vincent Hopper

Medieval Number Symbolism

I got this book to help me better understand number symbolism – the philosophy and relationship of numbers to themselves and to the cosmos – to apply this knowledge to the use of Tarot.

… medieval number philosophy, which often appears as sheer nonsense or at best as the product of extraordinarily confused thinking, is explicable only by reference to its origins. … It is the purpose of this study to reveal how deeply rooted in medieval thought was the conciousness of numbers, not as mathematical tools, nor yet as the counters in a game, but as fundamental realities, alive with memories and eloquent with meaning. … An important result of these studies has been to reveal in the medieval mind a web like structure of abstract ideas and concrete realities so closely interwoven and interdependent that no serious gap was felt to exist between them.

Vincent Hopper