That which rises and sinks is made up of what it rises from. The finality of the universe is the God Arunachala. Meditating on Him or on the seer, the Self, there is a mental vibration 'I' to which all are reduced. Tracing the source of 'I', the primal 'I-I' alone remains over, and it is inexpressible. The seat of Realisation is within and the seeker cannot find it as an object outside him. That seat is bliss and is the core of all beings. Hence it is called the Heart. The only useful purpose of the present birth is to turn within and realise it. There is nothing else to do.
Ramana MaharshiFrom where does this "I" arise? Seek for it within; it then vanishes. This is the pursuit of wisdom. When the mind unceasingly investigates its own nature, it transpires that there is no such thing as mind. This is the direct path for all. The mind is merely thoughts. Of all thoughts the thought "I" is the root.
Ramana Maharshi