Some of you may find this link interesting. Recommended by Ewan Hill.

Magic numbers: can math equations be beautiful?

“The concept of beauty underpins how mathematicians solve quantum theory or describe gravity. From E=mc² to string theory, mathematical beauty has led physicists to draw up some of the most compelling descriptions of reality. ‘Beauty is the torch you hold up in the belief that it will lead you to truth in the end,’ Sir Michael Atiyah says.”