Unity of Mathematics
Following in the footsteps of late Professor Charles Ehresmann (1966), who suggested that category theory--in light of its unifying mathematical concepts and constructions--should be taught as early as linear algebra, I made a case for learning and teaching category theory beginning with pre-university in our Science eLetter:
Universal yearning for understanding
Your time permitting, please critique.
I look forward to your corrections of any mistakes I might have made in my characterization of category theory.
Ehresmann, C. (1966) Trends toward unity in mathematics, Cahiers de Topologie et Géométrie Différentielle Catégoriques 8: 1-7. http://www.numdam.org/article/CTGDC_1966__8__A1_0.pdf