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| Ibn Sina |
Ibn Sina (Avicenna) was one of the frontmost philosophers of the Medieval times. He was the most famous physician, philosopher, encyclopaedist, mathematician and astronomer of his time. He wrote about 450 works on different subjects, unluckily only 240 of them have survived. In particular, 150 of his surviving works concentrate on philosophy and 40 of them concentrate on medicine. Ibn Sina also contributed to mathematics, physics, music and other fields.
Ibn Sina was a very religious man. During his childhood, he was highly baffled by Aristotle's work on Metaphysics and he used to leave all the work and used to spend his whole time in worship of God to guide him. Finally after reading a manual by a famous philosopher Al-Farabi, he found the solutions to his difficulties.
Ibn Sina was very self-conscious boy prodigy, professionally successful in his childhood; also at an early age he became a permanent exile from a home that ceased to exist; he was forced to serve hard-liners most of whom never appreciated his intellectuality and even did not esteem him as an intellectual; and yet he managed to stay with these rulers for whatever reasons.
Besides Ibn Sina's monumental writings, he also contributed to mathematics, physics, music and other science related fields. He long-winded the concept and applications of the “casting out of nines”. He also attempted several successful astronomical observations, and devised a means similar to the venire, to enhance the accuracy of instrumental readings. In physics, his main contribution were different forms of energy, light, heat, mechanical studies, and other concepts like force, vacuum and infinity.
