Purity of Mind and Concentration

"Awareness is primordial; it is the original state, beginning-less, endless, uncaused, unsupported, without parts, without change. Consciousness is on contact, a reflection against a surface, a state of duality. There can be no consciousness without awareness, but there can be awareness without consciousness, as in deep sleep. Awareness is absolute, consciousness is relative to its content; consciousness is always of something."
"If you seek reality you must set yourself free of all backgrounds, of all cultures, of all patterns of thinking and feeling. Even the idea of being man or woman, or even human should be discarded. The ocean of life contains all, not only humans. So, first of all abandon all self-identification, stop thinking of yourself as such-and-such or so-and-so, this or that. Abandon all self-concern, worry not about your welfare, material or spiritual, abandon every desire, gross or subtle, stop thinking of achievement of any kind. You are complete here and now, you need absolutely nothing."
"I may talk Non-duality to some of the people who come here. That is not for you and you should not pay any attention to what I am telling others. The book of my conversations [I Am That] should not be taken as the last word on my teachings. I had given some answers to questions of certain individuals. Those answers were intended for those people and not for all. Instruction can be on an individual basis only. The same medicine cannot be prescribed for all.
Nowadays people are full of intellectual conceit. They have no faith in the ancient traditional practices leading up to Self-Knowledge. They want everything served to them on a platter. The path of Knowledge makes sense to them and because of that they may want to practice it. They will then find that it requires more concentration than they can muster and, slowly becoming humble, they will finally take up easier practices like repetition of a mantra or worship of a form. Slowly the belief in a Power greater than themselves will dawn on them and a taste for devotion will sprout in their heart. Then only will it be possible for them to attain purity of mind and concentration."
~ Nisargadatta Maharaj (1897 – 1981) was a spiritual teacher of nonduality, who lived and taught in Bombay, India. He was very much admired for his direct and informal teaching. He is most famous for the work I Am That.