Ibn Sina, also known as Avicenna, was a Persian polymath who lived during the Islamic Golden Age. Born in 980 CE, he made significant contributions to various fields, including medicine, philosophy, and science. His most famous work, the Canon of Medicine, became a standard medical text in Europe and the Islamic world for centuries, laying the groundwork for modern medicine. In addition to his medical achievements, Ibn Sina wrote extensively on philosophy, particularly in the areas of metaphysics and ethics. His ideas influenced many later thinkers, including Thomas Aquinas and Rene Descartes. Today, Ibn Sina is celebrated as one of the greatest minds of the medieval period.