Aristotle on 1 (number)

“Every quantity is recognized as quantity through the one, and that by which quantities are primarily known is the one itself; therefore the one is the source of number as number.”

“Things consisting of fewer Principles are more accurate, than those understood by Addition [of more principles], as Arithmetic is more accurate than Geometry. ...That Science is more accurate which consists of fewer Principles, than what is only to be understood by Addition, as Arithmetic is more accurate than Geometry. I say by Addition, as Unity is a Being understood without Position, but a Point is to be understood only by Position.”