Albert Einstein: A Biography
(I don't really like fiction because life is more fascinating than fantasy)
Like Isaac Newton before him, he was attracted by the synthesis of classical geometry because it was so clear-cut and certain. Remembering his fondness for mathematics as a child, he later, in 1935, told a reporter for a high school newspaper in Princeton, New Jersey, "As a boy of twelve years making my acquaintance with elementary mathematics, I was thrilled in seeing that it was possible to find out truth by reasoning alone. ...I became more and more convinced that even nature could be understood as a relatively simple mathematical structure."
(He probably would've been the coolest college professor, EVER!)
Although sadly student were confused with his lectures, and terrible handwriting...