Combating antisemitism requires a shift in perspective, I explained. It must sprout from a positive place. We must know what we are protecting from assault. We must be motivated far more by our love for the insights, wisdom and joy embedded in Jewish culture than by the fight against those who harbor an insane hatred of it. We have a chance to renew that spirit in the weeks ahead, as the Jewish New Year presents its annual moment for deeply personal introspection and intensely communal reflection. In this stretch of the calendar, tradition tells us to engage in a heshbon...