John is fantastic, not only a nice person with absolutely zero ego, he has brain and heart and he has such a deep love for science, a funny writer too. Anything that he writes (TWIMP,his diary,his blog Azimuth, n-category cafe, his book ) is highly recommended.
This is a must read for the aspiring mathematician or physicist:
This is a must read for the aspiring mathematician or physicist:
https://math.ucr.edu/home/baez/books.html
Bonus points for being the nephew of Joan Baez.