[mohamez]

History of mathematics as well, it will give you a very subtle entry into the minds of mathematicians and the motivation behind their theorems.

This will surely make you more appreciative of subjects and concepts you are learning.

[keiferski]

Absolutely, and there are some really interesting personalities in the history of mathematics. Newton and Galois come to mind.

[jdkee]

Gödel springs to mind.

See https://www.newyorker.com/magazine/2005/02/28/time-bandits-2