Not only was the use of the vichara not confined to those who could go to Tiruvannamalai, it was also not confined to Hindus. The teaching of Sri Bhagavan is the essence of all religions, proclaiming openly that which was hidden. Advaita is the central postulate of Taoism and Buddhism; the doctrine of the Inner Guru is the doctrine of the “Christ in you’ restored to the plenitude of its meaning; the vichara penetrates to the ultimate truth of the Islamic creed or shahada, that there is no god but God — that there is no self but the Self. Sri Bhagavan was beyond the differences between religions. Hindu books were available to him, so he read them and expounded according to their terms, but he was also prepared to expound in the terms of other religions when asked. The sadhana he enjoined was not dependent on any religion. Not only Hindus came to him but Buddhists, Christians, Muslims, Jews, Parsis, and he never expected any to change his religion. Devotion to the Guru and the flow of his Grace leads to the deeper reality of every religion, and Self-enquiry to the ultimate Truth behind all religion.