Knowledge itself is 'I'. The nature of (this) knowledge is existence-consciousness-bliss. - Ramana Maharshi

It is false to speak of realization. What is there to realize? The real is as it is always. We are not creating anything new or achieving something which we did not have before. The illustration given in books is this. We dig a well and create a huge pit. The space in the pit or well has not been created by us. We have just removed the earth which was filling the space there. The space was there then and is also there now. Similarly we have simply to throw out all the age-long sanskaras which are inside us. When all of them have been given up, the Self will shine alone.

Silence is most powerful. Speech is always less powerful than silence.

That which rises in this body as 'I' is the mind. If one enquires 'In which place in the body does the thought 'I' rise first?', it will be known to be in the heart [spiritual heart is 'two digits to the right from the centre of the chest']. Even if one incessantly thinks 'I', 'I', it will lead to that place (Self).