Concentration is not thinking of one thing. On the contrary, it is excluding all thoughts, since all thoughts obstruct the sense of one's true being. All efforts are to be directed simply to removing the veil of ignorance. Concentrating the mind solely on the Self will lead to happiness or bliss. Drawing in the thoughts, restraining them and preventing them from straying outwards is called detachment (vairagya). Fixing them in the Self is spiritual practice (sadhana). Concentrating on the heart is the same as concentrating on the Self. Heart is another name for Self.

There must be a subject to know the good and evil. Thatsubject is the ego.

The explorers seek happiness in finding curiosities, discovering new lands and undergoing risks in adventures. They are thrilling. But where is pleasure found? Only within. Pleasure is not to be sought in the external world.

There is no greater mystery than this, that we keep seeking reality though in fact we are reality.

Yogas chitta vritti nirodhah - (Yoga is to check the mind from changing) - which is acceptable to all. That is also the goal of all. The method is chosen according to one's own fitness. The goal for all is the same. Yet different names are given to the goal only to suit the process preliminary to reaching the goal. Bhakti, Yoga, Jnana are all the same.

The pure mind is itself Brahman; it therefore follows that Brahman is not other than the mind of the sage.

Surrender is to give oneself up to the original cause of one's being.