@@ -71,6 +71,7 @@
- [Gershgorin circle theorem](https://en.wikipedia.org/wiki/Gershgorin_circle_theorem)
- [Science as a Vocation](https://en.wikipedia.org/wiki/Science_as_a_Vocation)
- [Aurora](https://en.wikipedia.org/wiki/Aurora)
+- [Universal Properties and Compositionality](https://erischel.com/universal-properties-and-compositionality/)
## Reference Book Backlog
- Bartlett's Familiar Quotations
