Book excerpt: In Wisdom to Heal the Earth, Tzvi Freeman provides a glimpse of the Rebbe's vision of humanity's great journey, and demonstrates how the choices we make in our everyday lives are vital, crucial, and especially urgent today, in reaching our ultimate destiny.In Jewish parlance we call this Tikun Olam-the notion that we all enter this world with a mission to accomplish: to repair and perfect our assigned share of the world so that it can become the world its Creator meant it to be.This volume presents a sampling of the succinct meditations and deep, colorful essays that comprise Wisdom to Heal the Earth, in a smaller, convenient format.