Mathematics – Grade Seven, 1961

Three statements by Aristotle: Categoriae

1. We may categorize things

2. There is a difference between a category and what is being categorized

3. No category may be a category of itself or great evil will ensue

- 350 BC

Notes:

Always good to begin with Aristotle. This is prior to the establishment of the Axioms by Euclid.

My first mathematics textbook was The Elements by Euclid and I had to pretty well memorize it in grade four.

The axioms of Euclid are based on the work and thinking of Aristotle.