Michael Berg Rest and action are two poles of existence. Whatever one is doing, one is either resting or exerting oneself. Exertion complements rest and rest complements exertion as day complements night and night complements day. The reader knows from universal experience, that exercise leads to a deeper sleep and that without resting, one cannot have the energy to act. Therefore, the question of primary importance, as with all pairs of opposites, is the question of balance. The issue of balance between work and rest is epitomized in the difference between the Hebrew and the Greek approaches to time and place.