Sleep restores our tiered body and our nervous system, and silence refreshes our mind and the spirit. Man’s ill health depends much upon his lack of coordination of both physical and mental forces. We need to think and act with calm unruffled attitude does not make our life productive. The practice of silence is a very great help for acquiring evenness of mind and tranquillity of the body. The silence leads us to efficiency. Silence is not a negation. It is not a state of sitting and doing nothing. Silence is experienced where the whole being is unified. Silence is like flowing through a channel in perfect rhythm. The productiveness of our activity depends upon our thought and action. . We need to order our mind to gather up all its scattered forces to establish our equilibrium and we cannot do this unless we withdraw at intervals from the haste and noise of outer occupation. The yoghis or Gurus practice silence for long years before their illumination.