Sri Ramana Maharshi on Commentaries on Bhagavan's Teachings

There are two things an individual is normally engaged in; either his body is busy doing something or his mind is engaged in thinking something. Seldom does he remain as ‘himself’, free from all influences.  Seldom does he remain in his natural state of peace and happiness. When he remains thoughtless and speechless, he attains his natural state of serenity and peace.  This state in which he remains quiet and still, dissolves his mind, remains ‘just being’ is the ideal state that leads him to Self-awareness.  Our saints have advised us many ways by which we can reach that state and one way which is simple and needs no special effort is ‘Summa Iru”.  It means remaining quiet without either any mental or bodily activity.