became famous for amazing success rate of surgeries in 14th century
worked as a surgeon on the battlefield, where he dealt with major wounds and developed his own pain killing ointment, which stopped need for cauterisation
this helped him develop speedy amputation methods, which he published in 'The Practice of Surgery' 1350
advocated for good beside manner and care, and to trust own judgement and experience, not old works like Galen/Hippocrates
charged rich but often let poor go free