Advaita Vedanta and Zen; THAT WHICH SEES and HEARS

Ramana Maharshi's Maha_Yoga pdf file contained this quote:

Page 105: The Sage tells him that the real Self is the source of the ego, and should be sought and found, if he would have fullness of Life. 

The Zen Master Bassui quotes: 

 "..keep asking with all your strength, What is it that hears?"

"To realize your own Mind you must first of all look into the source from which thoughts flow."

"Realization of the self-nature is the sole cure for all (mind) illness. Do not rely on any other remedy. Find the subject which casts the shadows, it is the very source of all Buddhas."

"What kind of master is it that this very moment sees colours with the eyes and hears voices with the ears, that now raises the hands and moves the feet?"

http://sriramanamaharshi.org/Allpub_demo.html

The below quote is from page 17 of 29, from Maharshi's Glimpses of life...pdf:

"The phenomena we see are curious and surprising — but

the most marvelous thing of it all we do not realise and that

is that one, and only one, illimitable force is responsible for:-

(a) All the phenomena we see,

(b) The act of our seeing them.

Do not fix your attention on all these changing things of

life, death, and phenomena. Do not think of even the actual

act of seeing them or perceiving them but only of that which

sees all these things. That which is responsible for it all. This

will seem nearly impossible at first, but by degrees the result

will be felt. It takes years of steady, daily practice, but that is

how a Master is made. Give yourself a quarter of an hour a

day. Keep your eyes open, and try to keep the mind unshakenly

fixed on That Which Sees. It is inside yourself. Do not expect

to find that “That” is something definite on which the mind

can be fixed easily; it will not be so. Though it takes years to

find that “That” the results of this concentration will soon

show themselves — in four or five months’ time — in all

sorts of unconscious clairvoyance, in peace of mind, in power

to deal with troubles, in power all round — always

unconscious power. I have given you this teaching in the same

words as the Masters give it to their intimate chelas. From

now onwards let your whole thought in meditation be not on

the act of seeing nor on what you see, but immovably on That

Which Sees."