How original is Roger Bacon - the so called pioneer of empiricism?
Encyclopedia of History of science
...In this part, also, it is evident that Roger Bacon is making use of such Arabian writers as Alkindi and Alhazen, and this is of especial interest, since it has been used by his detractors, who accuse him of lack of originality, to prove that his seeming inventions and discoveries were in reality adaptations of the Arab scientists...