A - possibly the - classic on Advaita. If new to Advaita, one would do better to explore Nonduality briefly, to get some mental understanding of it, prior to reading I AM That ( which points beyond all mentality ). I rate this I AM THAT and Ramana's Talks as two sources for inspiration and guidance for persons exploring the question "Who am I?" and, also, the spiritual philosophy of India. Both Ramana and Nisargadatta point us to the nonideological, nondogmatic Truth that is already present, rather than the endless mentalisms that fascinate so many in spirituality and religion and, thus, demonstrate the egoic complicating that only diverts us from the obvious and simple Truth "I AM." Like Talks, this is in brief, dialogical segments, one segment short enough for reading in only a matter of minutes.