Rest and repose as well as action and movement must have a certain balance, a certain rhythm. If there is no balance between activity and repose, then the breath is not secure either. Our great mistake is that with every little complaint the first thing we think of is the doctor. We never stop to think, "What has been the cause in myself? Have I been too active, too lazy? Have I not been careful about my diet, about my sleep? Have I not breathed in all the elements which are necessary to keep this mechanism of body and mind going?" Frightened by every illness, a man first runs to the doctor. As long as the illness has not appeared before him he does not mind if it is growing inwardly without his having noticed it. It may continue to grow for a long time; for years the man, absorbed in his outer activities, never thinks that he is giving a home to his worst enemy in his body. Thus very often illness is caused by negligence.