In his 1995 book From Age-ing to Sage-ing, Rabbi Zalman Schachter-Shalomi, the most influential Jewish change-maker of his generation, created a new way of looking at aging in the second half of life called “Sage-ing.” Instead of seeing this stage of life as a time of loss and diminishment, Sage-ing affirms the importance of aging as a time for deep reflection, continued learning, and spiritual growth.