A polymath born in Persia around 980 CE, Avicenna was, among other things, an astronomer, chemist, mathematician, poet, and the foremost physician and philosopher of his time. The Canon of Medicine, one of his most famous works, remained a standard medical text at many Islamic and European universities until the 18th century. Called the “doctor of doctors,” Avicenna is regarded as the father of modern medicine. How old was Avicenna when he began studying medicine? Discuss