Self-enquiry is certainly not an empty formula and it is more than the repetition of any mantra. If the enquiry ‘Who am I?’ were a mere mental questioning, it would not be of much value. The very purpose of self-enquiry is to focus the entire mind at its source. It is not, therefore, a case of one ‘I’ searching for another ‘I’. Much less is self-enquiry an empty formula, for it involves an intense activity of the entire mind to keep it steadily poised in pure Self-awareness.