# The Master Key that Unlocks Science: Addition or Proportion?

Recently I have been exploring the foundations of elementary number theory that best explain our world. So here is some trivia.

Isaac Newton’s 1687 *Philosophiæ Naturalis Principia Mathematica* (The Mathematical Principles of Natural Philosophy) presented laws of motion, universal gravitation and more.

On the page below is Newton's own handwriting, in what used to be his personal copy of Principia!

So what did I discover? A quick count (i) of the Latin words: addantur, addatur, adde, addebam, addenda, addendo, addita, additæ, additione, additionem, additis, addititiam, addititiis, and additur reveals 44 instances in total, whilst words variations of ‘proportion’ in the Latin appear 396 times. When it comes to describing our physical world via mathematics, it appears one concept is master over the other!

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**NOTE:** The reason the 'add count' graphic shows 57 instances of 'add' and 436 instances of 'proportion' is the fact there are many instances of these words in this PDF in English that are not a part of Newton's Latin mathematical text.

The PDF of Newton's Principia in Latin can be viewed online or downloaded from www.gutenberg.org/files/28233/28233-pdf.pdf

More photos from the original edition of Newton's Principia I have reviewed appear below.