When I first encountered the idea that the evil inclination was necessary for human flourishing in shul, it was presented in less sexual terms — I more often heard the evil inclination being described as the ultimate source of the drive to make art, engage in politics, advance the limits of human knowledge — and it left me a little confused. The impulse to write a sonata seemed very far removed from the impulse to lie, and I had trouble making sense of the connection. I think I am finally coming into an understanding.