Acharya Haribhadrasuri, a great author with powerful personality, had  written many books in Sanskrit and Prakrit. His versatile scholarship,  unmatched knowledge, acute critical faculty and mastery of language have  earned for him a distinguished place in the history of Indian  literature. The 1444 books deemed to have been written by him are  regarded as the most valuable treasure of knowledge of the Jain  religion. He was the first commentator of the Agamas (Jain canonical  literature) and through his books he blazed a new trail in meditation.
Uncommon and extraordinary was his life. He was the family priest of  king Jitari of Chittor. Besides being an authority on the Veda and  Darshanshastra (Jain Philosophy), he possessed thorough knowledge in 14  faculties of studies. In his own times, there was nobody in the entire  country to challenge and defeat him in debate and discussions. In Kali  age he thought himself to be the only scholar with the perfect knowledge  of scriptures and in his great arrogance had taken a vow that if anyone  defeated him he would become a disciple of that scholar.
 Once upon a time, while he was passing by Dharmagar in a palanquin,  he happened to listen to a gatha (verse) being sung in a tranquil and  melodious voice. Pandit Haribhatt made numerous efforts to interpret its  meaning but he failed to understand it. He had mastered four Vedas, all  the Upnishads and eighteen Purans as also all the branches of knowledge  and yet he failed to make out the meaning of the verses. He felt small  and his pride in being knowledgeable began to melt. In all humility, he  went to the Sadhviji and requested her to interpret the ‘gatha’ for him.
 Sadhvi Mahattara Yakini requested him to come the next day in the  presence of her Guru who would explain the meaning of the gatha.  Accordingly, Acharya Jindattasuri arrived there the next day and offered  an interpretation, whereupon Haribhatt became his disciple and in  course of time Pandit Haribhatt came to be known as Acharya  Haribhadrasuri.
 Since Sadhvi Yakini Mahattara had done an unusual obligation by way  of exposing new horizons in the pursuit of knowledge, Haribhadrasuri  regarded her as his mother. Now he disliked to be known by the epithet  of 
Kalikalsarvagna (omniscient in the Kali age). As he acquired a deep understanding and knowledge of Jain scriptures, he called himself 
alpamati -  a person having very little knowledge. He concluded every book that he  wrote with an invariable expression of deep gratitude to Sadhvi Yakini  Mahattara and introduced himself as Dharmaputra of Yakini Mahattara.
 Because of his hatred for the Jain religion Haribhatt used to say  that it would be better to die by being crushed under the feet of a mad  elephant than to seek shelter in a Jain Temple. Ironically enough the  very Haribhatt had to seek a shelter in a Jain temple to save himself  from a mad elephant. Having looked at the idol of Jina he had also joked  saying ‘your body itself is an evidence of your having relished sweet  dishes, because if hunger struck, a tree it would not be fresh and green  forever’.
 But strange are the ways of Nature. In course of time, he himself  came to realize the significance and greatness of the Jain religion and  the Jain temple and subsequently he modified his thoughts and words. It  is so said that he used to write books at night in the light of a gem  given to him by Lallig Sheth.
 His life-time is supposed to be from A. D. 700 to 770.
story from: http://www.tattvagyan.com