Origin and Development of Number Systems - E-book - Multi-format

"An analysis of the number systems of many races scattered all over the globe shows that such a similarity exists, and there is no reason to suppose that our own ancestors followed any other method. Indeed, such evidence as it is now possible to bring forward all goes to support this view. Counting begins when man first forms the idea of two as distinct from one and more than two. We may perhaps go back even one step further, and say that it begins when the idea of one, as distinct from more than one, is formed..."