Descartes

Cartesian way of thinking?

Cartesians adopted an ontological dualism of two finite substances, mind (spirit or soul) and matter. The essence of mind is self-conscious thinking; the essence of matter is extension in three dimensions. God is a third, infinite substance, whose essence is necessary existence.

Cartesian Logic | NLP is Fun

http://www.nlpisfun.com/2012/02/cartesian-logic.html

Cartesian Coordinates

https://www.mathsisfun.com/data/cartesian-coordinates.html

Cartesian coordinate system

https://en.wikipedia.org/wiki/Cartesian_coordinate_system