You don't read Gatsby, I said, to learn whether adultery is good or bad but to learn about how complicated issues such as adultery and fidelity and marriage are. A great novel heightens your senses and sensitivity to the complexities of life and of individuals, and prevents you from the self-righteousness that sees morality in fixed formulas about good and evil.
Abandon the urge to simplify everything, to look for formulas and easy answers, and to begin to think multidimensionally, to glory in the mystery and paradoxes of life, not to be dismayed by the multitude of causes and consequences that are inherent in each experience -- to appreciate the fact that life is complex.
You'll have a good, secure life when being alive means more to you than security, love more than money, your freedom more than public or partisan opinion, when the mood of Beethoven's or Bach's music becomes the mood of your whole life … when your thinking is in harmony, and no longer in conflict, with your feelings … when you let yourself be guided by the thoughts of great sages and no longer by the crimes of great warriors … when you pay the men and women who teach your children better than the politicians; when truths inspire you and empty formulas repel you; when you communicate with your fellow workers in foreign countries directly, and no longer through diplomats...