Hiriyanna wrote extensively across five decades on topics ranging from the 'Art of Teaching' [
Bodhana Krama – 1906] to his treatises on “
Ishavasyopanishad” (1911), “
Kenopanishad” (1912), “
Katakopanishad” (1915) and “
Brhadaranyakopansihad – Part 1” in 1919. His interests included Sanskrit language (linguistics), Sanskrit prose and poetry, comparative grammar, Vedic and post-Vedic philosophical thought in India and different schools of philosophies – namely Charavaka Materialism, Buddhist School of Philosophy, Nyaya-Vaisesika, Sankhya-Yoga, Purva-Mimamsa and Vedantic Schools – Advaita, Visistadvaita and Dvaita, Indian Aesthetics, Dhvani Theory and Study of Art. His years with
Sarvepalli Radhakrishnan and
Ardeshir Ruttonji Wadia at the University of Mysore saw him interpolate, compare and elucidate finer points of
Western Philosophy in relation to accepted notions on Indian philosophical thought. Hiriyanna presided over the All India Oriental Conference held in Mysore in 1935. In 1939, he was requested to chair the All India Philosophy Conference at Hyderabad. In 1940, he delivered the prestigious Miller's Memorial Lecture on Philosophy at Madras. Hiriyanna made sterling contributions to the world of Sanskrit. In recognition of this, the Madras Sanskrit Academy conferred him with the title of "
Samskrutasevadhurina" the same year. Hiriyanna's contributions to comparative
philology, Sahitya (Literature), Alamkara (Figures of Speech) and Vyakarana (Grammar) and several Darshanas were credible. He was undeniably the earliest to translate
Bhasa's "
Svapnavasavadattam" to English, which he titled "The Dream Queen". His works on Advaita are authoritative and his "
Naishkarmya-siddhi" and "
Vedanta-sara" are examples to this. His "
Ishta-siddhi" is without doubt his finest piece on the Advaitic school of thought. His grasp of the Western philosophical doctrines is brilliantly clear in his "Mission of Philosophy" (1960) where he discusses at great length Immanuel Kant's ideas on "Duty", "Ideal of Perfection", "Moral Good vs. Non-Moral Good", "Promotion of Oneself" and "Rectification of the Will". He had of course, made a comparative study of Socrates and Plato. Hiriyanna's foreword to
V. Raghavan's "The Number of Rasas" gives one a glimpse of his grasp of the "Rasa Theory" and his perspectives on "Alamkara Shastra". This is clearly expounded in his article titled "
Art Experience" published in "
The Aryan Path" in 1941. ==Writings==