Below is a list of the most influential books I have read outside of the classroom.
Quantitative Finance
How We Know What Isn’t So by Thomas Gilovich
Option Volatility and Pricing Strategies by Sheldon Natenberg
Finance
How I Made $2,000,000 in the Stock Market by Nicolas Darvas
How to Make Money in Stocks by William O’Neil
Reminiscences of a Stock Operator by Edwin Lefèvre
Rich Dad Poor Dad by Robert Kiyosaki
Novels
Autobiography of Benjamin Franklin by Benjamin Franklin
Crime and Punishment by Fyodor Dostoyevsky
How to Win Friends and Influence People by Dale Carnegie
The Prince by Niccolo Machiavelli