The Litmus Test of Satisfaction: Understanding Ayin Tovah and Ayin Ra

Rabbi Zweig begins by noting a unique halacha (הלכה) regarding Chanukah (חנוכה): unlike other mitzvos, one may recite a berachah upon merely seeing someone else's Chanukah lights. While there is a machlokes whether this applies even to one who will later light his own menorah, the principle itself is unprecedented. Why does seeing Chanukah lights warrant a berachah when seeing someone else's lulav or mezuzah does not? The shiur then turns to a Mishna in Pirkei Avos where five scholars identify the best and worst character traits. The responses include "ayin tovah" (a good eye) and "ayin ra" (a bad eye), along with being a good friend, good neighbor, taking responsibility, and having a good heart. Rabbi Zweig asks: What exactly is a "good eye" or "bad eye"? This cannot simply mean good vision. It must refer to a fundamental character trait—but what is the underlying psychology?