A friend wrote to me a few months ago saying that after reading the teachings of Sri Ramana and Nisargadatta he was confused about whether the ‘I’ we should investigate in ātma-vicāra (self-investigation) is the ego (the jīvātman or finite individual self) or our real self (the ātman or infinite self), and he asked whether there is any difference between their respective teachings, and whether perhaps Sri Ramana refers to the jīvātman whereas Nisargadatta refers to the ātman. The following is adapted from the reply I wrote to him:
Your comment that you are a little confused about the ‘I’ referred to in ātma-vicāra suggests that there could be more than one ‘I’, which is obviously not the case. As we each know from our own experience, and as Sri Ramana repeatedly emphasised (for example, in verses 21 and 33 of Uḷḷadu Nāṟpadu: ‘தான் ஒன்றால்’ (tāṉ oṉḏṟāl), ‘since oneself is one’, and ‘தனை விடயம் ஆக்க இரு தான் உண்டோ? ஒன்று ஆய் அனைவர் அனுபூதி உண்மை ஆல்’ (taṉai viḍayam ākka iru tāṉ uṇḍō? oṉḏṟu āy aṉaivar aṉubhūti uṇmai āl), ‘To make oneself an object known, are there two selves? Because being one is the truth of everyone’s experience’), there is only one ‘I’. When this one ‘I’ experiences itself as it really is, it is called self or ātman, whereas when it experiences itself as something else it is called ego, jīva or jīvātman.
Your comment that you are a little confused about the ‘I’ referred to in ātma-vicāra suggests that there could be more than one ‘I’, which is obviously not the case. As we each know from our own experience, and as Sri Ramana repeatedly emphasised (for example, in verses 21 and 33 of Uḷḷadu Nāṟpadu: ‘தான் ஒன்றால்’ (tāṉ oṉḏṟāl), ‘since oneself is one’, and ‘தனை விடயம் ஆக்க இரு தான் உண்டோ? ஒன்று ஆய் அனைவர் அனுபூதி உண்மை ஆல்’ (taṉai viḍayam ākka iru tāṉ uṇḍō? oṉḏṟu āy aṉaivar aṉubhūti uṇmai āl), ‘To make oneself an object known, are there two selves? Because being one is the truth of everyone’s experience’), there is only one ‘I’. When this one ‘I’ experiences itself as it really is, it is called self or ātman, whereas when it experiences itself as something else it is called ego, jīva or jīvātman.