Happiness is your real nature. You identify with yourself with the body and mind, feel it's limitations, and suffer. Realize your true self in order to open the store of happiness. That true self is the reality, the Supreme Truth, which is the self of all the world you now see, the self of all the selves, the One real, the Supreme, the Eternal self - as distinct from the ego or the bodily idea for the self.

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

Concentration of the mind is in a way common to both Knowledge and Yoga. Yoga aims at union of the individual with the universal, the Reality. This Reality cannot be new. It must exist even now, and it does exist.

Silence is truth. Silence is bliss. Silence is peace. And hence Silence is the Self.

You do not like to suffer yourself. How can you inflict suffering on others?

The normal self is the mind. The mind is with limitations. But pure Consciousness is beyond limitations, and is reached by investigation into the "I."

The inquiry "who am I" turns the mind introvert and makes it calm.