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Isn't that a bit misleading because Erdos was a famously unusual mathematician personality/lifestyle? I think focusing on Erdos as an intro fetishizes mathematicians/mathematics.

Good point but the book is very clear about how unusual Erdős was and talks about the lives of more normal mathematicians he worked with.

Thanks for the recommendations!

You'd recommend Polya over "How to Prove It" by Velleman? Polya's seems more about general problem-solving techniques, versus proofs.