What was the book that opened your mind to the beauty of mathematics? [closed]

big-list reference-request soft-question

Solution 1:

Gödel, Escher, Bach by Douglas R. Hofstadter

Solution 2:

Rudin, Rudin, Rudin. Baby analysis, Real and Complex Analysis, and Functional Analysis. His terse style is like no other as he makes you work for your understanding. Moreover, the exercises are fun, hard, and instructional.

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