"Uncle Petros and Goldbach's Conjecture" by Apostolos Doxiadis. Not a math book, but a really well written, full with math history novel about the value of mat

"Uncle Petros and Goldbach's Conjecture" by Apostolos Doxiadis. Not a math book, but a really well written, full with math history novel about the value of mathematics in a human's life. It gives you the reason, why you should know (higher) maths, even if you will won't become a mathematician.