Right Eye - Left Eye

When I was four years old, I asked my father: “Why did G-d make people with two eyes? Why not with one eye, just as we have been given a single nose and a single mouth?”

Said father: “There are things upon which one must look with a right eye, with affection and empathy; and there are things upon which one must look with a left eye—severely and critically. On one’s fellow man, one should look with a right eye; on oneself, one should look with a left eye.” - Rabbi Yosef Yitzchak of Lubavitch

"The Rule is we must be hard on ourself, but always considerate of others" - Alcoholics Anonymous page 74