Nataraja Guru
The youngest of his disciples in whom Narayana Guru showed much personal interest was Natarajan (afterwards Nataraja Guru), the second son of Dr. Palpu When this son of Dr. Palpu was born, the Guru himself named him as Natarajan, and the Doctor promised the Guru to give his son for Guru's cause. Narayana Guru found in this boy even from the age of twelve, a disciple as dedicated and firm as was St. Peter to Jesus Christ. On hearing the news that Natarajan passed his Master's Degree in Zoology and also simultaneously got his Teacher's Degree, Narayana Guru welcomed him to join him as a member of the ashram in Sivagiri. For a short while he taught in the Advaita Ashrams in Alwaye as an English teacher. Thereafter, the Guru made him the headmaster of the Sivagirl school.
In 1923 with the blessing of Narayana Guru, he started the Narayana Gurukula Movement. In 1928 Narayana Guru sent his beloved disciple for a final finishing course at the Sorbonne, in Paris, The future Nataraja Guru received his Doctorate of Letters from the Sorbonne on presenting a thesis on "The Personal Factor in the Educative Process." Subsequently he joined the Fellowship School in Geneva and taught there as a physics teacher for five years,

While Nataraja Guru was in Geneva he wrote a series of articles in the Sufi Quarterly. This caught the attention of eminent western thinkers such as Romain Rolland, Sir Francis Young Husband and Sommersmet Maugham. Afterwards Nataraja Guru established fifteen Centers of the Narayana Gurukula in India and also centers in New Jersey (U.S.A.), Ghent (Belgium), Geneva (Switzerland), and Singapore in South East Asia.
In his well known book The Word of The Guru there is a short biography of Narayana Guru, throwing light on the Guru's teachings. Nataraja Guru also commented on Narayana Guru's Atmoapadesa Satakam (One Hundred Verses of Self. Instruction). Nataraja Guru's interpretation of the Bhagavad Gita also throws light on Narayana Guru's attitude towards the Gita. Daiva-Dasakam, Advaita-Dipika, Janan-Navaratna Manjarl, Jivakarunya Panchakam, Anukampa-Dasakam, Pinda-Nandi, Chijia.da-Chintanam, Kundalini- Pattu, Brahmavidya-Panchakarn, Municharya-Panchakam, Kali. Natakam, Jati- Mimamsa, Siva-Prasida Panchakam, Arivu, Nirvrti-Panchakam, Darsana-Msla, Agni Hotra, Anubhut Dasakam and Prapancha-Suddhi Dasakam were all translated into English by Nataraja Guru. His magnam opus is an exhaustive commentary on the Darsana Mala. It is called An Integrated Science of the Absolute.