Shriharsha

Shri-harsha (IAST: Śrīharṣa) was a 12th century Sanskrit very intelligent philosopher, bhakt, poet from India. He was so intelligent that he challenge to find mistake in his poet to goddess Sarswati. His advait-vendantic granth(text), खण्डन-खण्ड-खाद्य, is EXCELLENT. There is no match. 
Early life.
Śrīharṣa was the son of Śrīhira and Mamalladevī. His father, Śrīhira, was a poet in the court of the Gahadavala king Vijayachandra. His father was also guiding and diverting common people towards god with veda's, Bhagavad Gita's thoughts. His father asked Harsha at the time of death to study well and become pandit. Then, use his shiksha (education) towards making life of people divine and better. Also, asked to take thoughts of Bhagavad Gita to every one. 
Harsha went to gurukul for education and study under Guru's guidance. He mastered all scriptures and all schools of thoughts prevailing at that time. He wrote unparalleled book (granth), खण्डन-खण्ड-खाद्य, on advait vedant. In this book, he has refuted Nyayadarshan's principals. 
Naishadha Charita.
Śrīharṣa composed the poem ("kāvya") "Naishadha Charita" (IAST: "Naiṣadhacarita") in 1174, during the reign of the Vijayachandra's son Jayachandra. According to Rājaśekhara's "Prabandhakośa", upon the wide acceptance of "Naishadha Charita", Śrīharṣa was dignified with the title "Narabharati".
The "Naishadha Charita" contains erotic themes, but according to the 15th-century Jain scholar Nayachandra Suri, Śrīharṣa was actually a celibate, who had "conquered his sense organs" ("jitendriya").
The "Naishadha Charita" was brought into Gujarat by Harihara during the reign of Vīradhavala to which Chandu Pandita in his "Dipika", composed in 1296, refers to as a new poem and also to the commentary of Vidyādhara. "Naishadha Charita" was composed earlier than "Khaṇḍanakhaṇḍakhādya" in which text Sriharsha alludes to the works of Kalidasa.
Other works.
Śrīharṣa spent his later life in ascetic serenity on the banks of River Ganga. He composed several other works, none of which are now available. These include "Vijayaprasasti", "Chindaprasasti", "Gaudorvisakulaprasasti", "Sahasankacarita", "Arnavavarnana" and "Amarakhandana" are now available. His "Khaṇḍanakhaṇḍakhādya" is a critique of the "Śivabhaktisiddhi" by Udayana, the Nyāya philosopher.
Śrīharṣa was also a philosopher; "Khaṇḍanakhaṇḍakhādya" or "Sugar-candy pieces of refutations," is a refutation of the doctrines of the "Nyāya" system of philosophy.